Functions in a Nutshell: GRE and GMAT Math

[@vaidehipatel4159]

God knew I would be too powerful if I had math teacher like you in school

[@dipthyanchan6510]

U make me like math... i dreaded it all these years... wish I had a teacher like u teaching math in school👏🏼👏🏼👏🏼👏🏼❤️

[@TheTestedTutor]

What a lovely comment Dipthy :) keep em coming

[@pricklypearcacto5999]

Liked the first video that I watched so much that I start each practice session with your videos now

[@TheTestedTutor]

Great to hear prickly fruit

[@ashmitabanerjee]

Hi Philip, I love how make difficult concepts so easy to grasp. Your channel has been my most valued resource for my GRE prep, however I found a less time consuming way of solving the last problem by compiling everything I have learnt from you so far. Hope you don't mind me sharing here. Plugging a and b in f(x) in the two different cases of f(x), we can see f(a) = a+ 1 and f(b) = b-1 and if we want to satisfy the given condition i.e f(a) + f(b) = a + b, adding a+1 and b-1 we can see that the -1 and +1 gets cancelled. This means our original assumption of plugging a in one case and b in the other is correct. Thus by the rule that states even + odd is odd, we get option C.

[@TheTestedTutor]

Great method Ashmita, thank you. And thank you for your kind comment.

[@ihuomaokoro-ebi3837]

Each video gives me so much joy

[@TheTestedTutor]

😀

[@kolawolesamsonimoleayo1144]

You are indeed a genius, God bless u for making, maths as simple as a,b,c

[@1327]

the best online teacher

[@ananya9356]

Thank you for this video, I've been struggling with functions for so long but you made it easy.

[@prikhjo3181]

I'm so bummed that I found your channel literally a day before my GMAT. If only I'd have found it sooner, all those function questions that seemed like alien particles floating in the air, wouldn't have felt so daunting. Well, I'm glad that I found your channel. Post my test, I'm going to go through your content anyway and apply the understanding again for my retest. THANK YOU!! P.S: I never comment on YT (this is my first ever comment). I couldn't help but applaud you for your effort to make this seem effortless.

[@TheTestedTutor]

What a lovely comment Priyanka. Thank you for leaving your first ever one. It means a lot. :)

[@stopcapping1799]

Im so glad i found this channel, i was really struggling learning these concepts on my own

[@upashanabhattarai2507]

You have no idea how simple and interesting you are making my preparation. Thank you so much for uploading such wonderful content.

[@maishamubassara4612]

Thanks Philip, for making difficult stuff that easy. Would like to have one on hard inequalities and absolute values.

[@TheTestedTutor]

I will defo get to those soon. Thanks Maisha

[@maggieznoodles]

when is your exam?

[@giselemello6503]

I was avoiding studying function because it seemed confusing before. But after the explanations, I could even solve the problems alone. 🙌🏾 Thank you so much!

[@TheTestedTutor]

So glad to hear Gisele!

[@Jay-lq8ly]

your explanations are saving me

[@hassaanraza1090]

You're awesome man, thoroughly enjoying these videos for the past few days.

[@TheTestedTutor]

Thanks so much, enjoy!

[@jeanvilbertpereira9233]

Amazing video. I just found backsolving kind of hard (especially for a non-math guy like me). What I did: I factored the function beforehand: f(x) = x^2 + x --> x^2 + x - 30 = 0 --> (x - 5) (x + 6) = 0. Then I plug in 2t top get (2t - 5) (2t + 6) = 0. Now it's super easy to see that t = -3 or t = 5/2.

[@myAgentHQ]

Excellent content. You explained that incredibly well. Thanks.

[@prajwalbadole4900]

Such a helpful video this guy deserves all the views

[@Abhishek-fe3zs]

For the last question, I deduced that if a is even, b has to be odd. And so only option c can be correct. At first I was confused about what to do but your rule about always substituting the number inside the function in place of the default variable really helped. f(a) + f(b) will only be a + b, if it's a-1+b+1 or a+1+b-1.

[@ashwintaksh]

Love your videos Philip 🌈🙌

[@ishanbaral3765]

Thanks Philip , I have been grinding all your videos , I have GRE on sept 23 , wish me luck :(

[@sabaaref6025]

Wish you were my math teacher during high school!

[@shubhrahalder25june]

Sir functions were giving me nightmares! I got the concept after watching your video!!! God bless you!!

[@TheTestedTutor]

Happy to help

[@purvakolwankar2841]

Omg! You made this soo easy!!! Thanks 😊

[@alphawolf9990]

Hi Phillip, I just gave my GRE Today. Got Q164, V145. I know verbal score is very low but I couldn't get proper sleep as my flight was delayed ( I had to travel to other state for this exam). Anyways thought of letting u knw as Quants went from 156 to 164. Thanks a lot!

[@TheTestedTutor]

Well done Alpha! Am proud! Stick with the channel as I move into finance videos...

[@alphawolf9990]

@@TheTestedTutor I will.

[@md.iftekharislam8985]

your videos helps me a lot to overcome my weak points thanks a lot buddy

[@TheTestedTutor]

Happy to help

[@hamzazwairy7075]

Okay, first of all I only found out about your channel 2 days ago, sadly. Secondly, I love you man, I did the GRE previously but I only had 1 week so I did not do as well as needed on it but now i have around 2-3 weeks max left ( already started studying 1 week ago ) and so far your channel is the best resource to study QUANT from. I have one question though, if I only go through the videos ( by grouping them into arithmetic , algebra, geomtry and data analysis ) and just go and try to pick up training questions from various websites like ETS, greprep club etc.. will that be enough or do you think there are some topics/sections that needs more covering ? for example the geomtry section .. I have trust issues on those, is everything about their formulas, rules, shortcuts, etc.. in here ? Once again you are a legend

[@TheTestedTutor]

You need to watch all my quant stuff and also do lots of extra, I have not covered every topic/trick yet. Hopefully in the coming months I will.

[@laudakabc]

its a good video and the tips just makes it better ⚡

[@talhamajeed1805]

Great job👍

[@shpendimaskuli1932]

So helpful man, thank you loads

[@bhavnanarayanan583]

Hello Philip, I like the video, but I think for question 23- it is using laws of Even and Odd Numbers (even + odd = odd), hence the answer is 3. No need to plug in numbers.

[@TheTestedTutor]

Nice! That works too yes Bhavna.

[@bhavnanarayanan583]

@@TheTestedTutor I used your videos recently, they’re very good ! I had to take the GRE for my licensure, so thank you so much 😊

[@TheTestedTutor]

@@bhavnanarayanan583 Thanks bhavna, hope you got it.

[@ibukunoyeleke1470]

Thank you, Philip!

[@mansib2228]

Thank you Philip.. I came home from work and found you had posted this.. Really appreciate for making the video.. Request u to make one on inequalities as have been suffering with the concepts there!!

[@TheTestedTutor]

Worked so hard to get this done for you! Hope it helped.

[@mansib2228]

Getting ready to watch and work with it now... Thanks a ton!

[@mansib2228]

Function is no longer my Achilles heel! Was able to work out the crazy hard question as well!!

[@maggieznoodles]

when is your exam, Mansi?

[@mansib2228]

@@maggieznoodles it is on February 8, 2020

[@shivangishukla9674]

great job explaining. one of the best

[@TheTestedTutor]

Thank you so much Shivangi

[@selma5808]

Thank you so much for this video. I was stuck at this concept for a few days but you really helped me understand it. You even made the last question seem so simple! I am actually beginning to enjoy math now :)

[@TheTestedTutor]

That's great to hear! Math is amazing

[@hansiwelangoda1895]

Thank you very much Philip for making me good at maths 🤩

[@Tilmaamaha_Caafimaadka]

Thank you for your dedicated videos. This has been so helpful.

[@TheTestedTutor]

Thanks Hassan!

[@caileystephens7273]

I really appreciate these videos to help me improve in math for the GRE! Great reviews!

[@TheTestedTutor]

Happy to help Cailey!

[@gravelcandy7076]

god bless youu thanks a ton for all these concept explanations

[@leebarker3487]

Another fantastic video, thanks mate!

[@TheTestedTutor]

Thanks again!

[@sufyanali7686]

Thank you very much Philip...

[@TheTestedTutor]

Thanks for the comment...

[@artwithrekha9615]

Thank you❤❤❤

[@habeebadegboye5338]

Thanks for your efforts

[@shibanisabnis790]

Thank you. These videos really help me :)

[@vidhigadhiya8202]

This really helped!

[@adityaprakash7983]

great video

[@boop53]

Helped me lots with understanding functions, great video

[@TheTestedTutor]

Thanks Ice!

[@nikhillalwani5679]

Great video buddy ! Made this topic relatively simple for me. Go ahead with different chapters if you find time. Thanks a lot !

[@TheTestedTutor]

Thanks Nikhil!

[@nikitachaudhari9167]

Hey Philip, could you please make video on Sequences (AP & GP) word problems? I learnt all concepts from your videos really really very good explanation . Thank You :) !!

[@TheTestedTutor]

Yes that is on my list...

[@TheHerothief]

Thank you so much!

[@TheTestedTutor]

You're welcome!

[@indian_scouser_ynwa]

Thanks a ton, great video!

[@TheTestedTutor]

Thanks so much! You have been a loyal subscriber!

[@universal4334]

ton isn't enough for Philip

[@manjosonstrike159]

Man, u r amazing!!

[@bradleygoronson9698]

Great video as always!

[@TheTestedTutor]

I appreciate that

[@avnishtayal7038]

Hello Sir, I have been following your videos and I have felt more comfortable in understanding the concepts. Thank you sir. I wanted to ask you where can I take a diagnostic test which will help me discover where I stand?

[@TheTestedTutor]

Ets powerprep ones are great

[@ranveerchavan3439]

amazing

[@ssam_v9904]

Do you have any GRE test book recommendations? Like you suggested in your first video, I'd like to take 10 sit down GRE tests before the actual exam. I'm about to start studying for it and I'm finding your videos very helpful:) I'm very interested in knowing which books you trust.

[@TheTestedTutor]

Thanks ssam. I find Manhattan 5lb book very good but a little hard. If you can do that plus the Official Guides, that is best.

[@ssam_v9904]

@@TheTestedTutor Wonderful:) Thank you x100!

[@drvalenpori]

thanks:)

[@SISANHLABATHI]

There is light at the end of the channel.

[@narayankhanal9662]

Great!

[@rachelparagshorts]

Sir i didnt understand domain .. the last one .. how 4 is calculated?

[@pranayakgautam8972]

not sure if this is right but this is how I got the answer for the last one. solution- I replaced x with a and b respectively. so f(a) + f(b) = a+b by trial and error, a+1+b+1 = a+b+2 (so not true) a-1+b-1= a+b-2 (so not true again) a-1+b+1= a+b (so works) hence one has to be odd and one has to be even

[@TheTestedTutor]

Nice

[@Manish-uk2ow]

Tell me philip, what is the difficulty of quants level for UG student of math major?

[@aidateklemariam177]

Thanks, Philip! Question for the ax + by + c equation practice problem at end; I got -6x + 30 - 7y - the reciprocal. What is the reason you subtracted 6x + 30 from 7y rather than subtracting 7y by 6x + 30?

[@TheTestedTutor]

Can't see that question...

[@seim9710]

If you fill in both odd numbers in question 23, it also works out doesn't it? So for example 7-1 = 6 and 9+1 is 10. 6+ 10 is 16 and 7 + 9 is also 16. And it this case A + B is not Odd but even. So to me the correct answer seems to be E. What I am I getting wrong here?

[@pepekale9182]

7:48 I replaced (P)=7 and got -9...big mistake f(p) =7 not P =7 ! these functions topic is indeed hard level, it is so abstract. I have also heard of terms like domain, origin under this topic. ofcource I do not understand

[@ramisaanjum9119]

tysm

[@minvithaalahari1107]

what is the solution of last question

[@TheTestedTutor]

Domain x is greater or equal to 4

[@SudiptoBanerjee98academic]

❤

[@maggieznoodles]

wunderbar

[@TheTestedTutor]

Thanks again maggie!

[@cardiyansane1414]

Got 1st hard example wrong, I substituted the original function into f(2t)=30 instead of the other way round..but i got the extreme example right ..oh well

[@isaacabanyi2131]

Crazy Hard is crazy hard

[@DemiCat573]

the 5lb book is much harder than that first example u showed that u said is one of the hard ones seen on the GRE so idk I am just confused

[@ahmadsaeedbajwa6246]

i could not get a single thing which u told

[@favourchinda2991]

Back solving

[@jawad451989]

comment

[@michelleceline8655]

Thank you so much!

[@parasgarg-ix9ik]

Thank you so much!