Logarithms. How to find the log of any base on the calculator! (Casio fx-83GT PLUS, fx-85GT)

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⨸ Aʙᴏᴜᴛ Tʜɪs Vɪᴅᴇᴏ ⨸ - Logarithms. How to find the log of any base on the calculator - The video is taken from How To master Your Casio Calculator available here ➜ goo.gl/oqRDMn
The Casio calculator has a log button which allows you to input the base of that logarithm. This makes for very flexible solutions when answering logarithm questions. There is also a generic log button, which is base 10 by default (but can be altered as explained in the course), useful for quick calculations.
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𝘍𝘰𝘳 𝘷𝘪𝘥𝘦𝘰𝘴 𝘤𝘰𝘯𝘤𝘦𝘳𝘯𝘪𝘯𝘨 𝘢 𝘊𝘢𝘴𝘪𝘰 𝘊𝘢𝘭𝘤𝘶𝘭𝘢𝘵𝘰𝘳, 𝘊𝘢𝘭𝘤𝘶𝘭𝘢𝘵𝘰𝘳 𝘚𝘺𝘮𝘣𝘰𝘭𝘴, 𝘔𝘰𝘥𝘦𝘴, 𝘐𝘮𝘢𝘨𝘦𝘴 & 𝘗𝘳𝘰𝘥𝘶𝘤𝘵 𝘕𝘢𝘮𝘦𝘴. 𝘢𝘳𝘦 𝘊𝘰𝘱𝘺𝘳𝘪𝘨𝘩𝘵© 𝘊𝘢𝘴𝘪𝘰 𝘊𝘰𝘮𝘱𝘶𝘵𝘦𝘳 𝘊𝘰. 𝘓𝘵𝘥 . 𝘊𝘢𝘭𝘤𝘶𝘭𝘢𝘵𝘰𝘳𝘴 𝘧𝘳𝘰𝘮 𝘰𝘵𝘩𝘦𝘳 𝘤𝘰𝘮𝘱𝘢𝘯𝘪𝘦𝘴 𝘮𝘢𝘺 𝘴𝘰𝘮𝘦𝘵𝘪𝘮𝘦𝘴 𝘧𝘦𝘢𝘵𝘶𝘳𝘦, 𝘪𝘯𝘤𝘭𝘶𝘥𝘪𝘯𝘨 𝘛𝘦𝘹𝘢𝘴 𝘐𝘯𝘴𝘵𝘳𝘶𝘮𝘦𝘯𝘵𝘴, 𝘕𝘶𝘮𝘸𝘰𝘳𝘬𝘴 & 𝘚𝘩𝘢𝘳𝘱. 𝘛𝘩𝘦𝘊𝘢𝘭𝘤𝘶𝘭𝘢𝘵𝘰𝘳𝘎𝘶𝘪𝘥𝘦.𝘊𝘰𝘮 𝘦𝘢𝘳𝘯𝘴 𝘮𝘰𝘯𝘦𝘺 𝘧𝘳𝘰𝘮 𝘥𝘪𝘴𝘱𝘭𝘢𝘺 𝘢𝘥𝘴 & 𝘢𝘧𝘧𝘪𝘭𝘪𝘢𝘵𝘦 𝘭𝘪𝘯𝘬𝘴. 𝘓𝘪𝘯𝘬𝘴 𝘛𝘰 𝘗𝘳𝘰𝘥𝘶𝘤𝘵𝘴 & 𝘛𝘩𝘪𝘳𝘥 𝘗𝘢𝘳𝘵𝘺 𝘞𝘦𝘣𝘴𝘪𝘵𝘦𝘴 𝘴𝘶𝘤𝘩 𝘢𝘴 𝘈𝘮𝘢𝘻𝘰𝘯 𝘢𝘯𝘥 𝘰𝘵𝘩𝘦𝘳 𝘳𝘦𝘵𝘢𝘪𝘭𝘦𝘳𝘴 𝘢𝘳𝘦 𝘢𝘧𝘧𝘪𝘭𝘪𝘢𝘵𝘦 𝘭𝘪𝘯𝘬𝘴. 𝘐𝘧 𝘺𝘰𝘶 𝘤𝘭𝘪𝘤𝘬 𝘰𝘯 𝘵𝘩𝘦𝘴𝘦 & 𝘣𝘶𝘺 𝘢 𝘱𝘳𝘰𝘥𝘶𝘤𝘵 𝘵𝘩𝘦𝘯 𝘛𝘩𝘦𝘊𝘢𝘭𝘤𝘶𝘭𝘢𝘵𝘰𝘳𝘎𝘶𝘪𝘥𝘦.𝘊𝘰𝘮 𝘳𝘦𝘤𝘦𝘪𝘷𝘦𝘴 𝘢 𝘴𝘮𝘢𝘭𝘭 𝘤𝘰𝘮𝘮𝘪𝘴𝘴𝘪𝘰𝘯 𝘢𝘵 𝘯𝘰 𝘦𝘹𝘵𝘳𝘢 𝘤𝘰𝘴𝘵 𝘵𝘰 𝘺𝘰𝘶. 𝘛𝘩𝘪𝘴 𝘩𝘦𝘭𝘱𝘴 𝘴𝘶𝘱𝘱𝘰𝘳𝘵 𝘵𝘩𝘦 𝘤𝘩𝘢𝘯𝘯𝘦𝘭 & 𝘢𝘭𝘭𝘰𝘸𝘴 𝘮𝘦 𝘵𝘰 𝘤𝘰𝘯𝘵𝘪𝘯𝘶𝘦 𝘵𝘰 𝘮𝘢𝘬𝘦 𝘷𝘪𝘥𝘦𝘰𝘴.

[@sirajucation]

Thank you so much for this great tutorial.

[@monoman4083]

great channel. could spend hours on here. thanks.

[@rigae2]

How do you get to the mode that displays Math at the top? When I press log button with two boxes, I don’t get what you’re getting. I suspect that the background node has something to do with it.

[@renebarnard7139]

Very helpful! :)

[@TheFlyguy31]

Thanks to your videos. I now have a better relationship with my calculator than i do with my GF..

[@TheCalculatorGuide]

Erm... thanks 😬

[@TheFlyguy31]

lol

[@simonhuang348]

my calculator is fx-82AU plus II Casio and i dont have the base number input. i dont know what to do

[@lavender0666]

Using an FX-CG 20 I can't find that specific log button, even after pressing log it still looks different and the function is new to me

[@TheCalculatorGuide]

It should be [OPTN] [F4] [F6] [F4] in RUN MATRIX. Then you can navigate down to alter the base and then input your number in the brackets.

[@aranidasanayake6999]

Hey thanks for the video it really helped but my calculator does not have that key but instead I have "x!" this key but I have a casio too but it is fx-82 AU PLUS II is this the reason?

[@TheCalculatorGuide]

I imagine it is. The calculator shown is the fx-83GT Plus

[@mollymcnally4987]

How do you get the anti log??

[@saujanyapoudel7378]

[Shift] + [Log] for antilog of 10 and [Shift] + [ln] for antilog of e

[@aidan2849]

does it work on the ti 83 plus calculator

[@TheCalculatorGuide]

Not sure. If you've got one, try it out and comment below.

[@lizhbsk]

Thanks!

[@TheCalculatorGuide]

Thank you for your support.

[@purplekitten12]

urgent help! when i click log with the two boxes, it comes up as if i just press log

[@TheCalculatorGuide]

It will do this if you are in Line mode (LineIO). You can either change to Math mode or you can input say Log(2,8) to change the base from 10 to the first number (in this case 2) then comma, then the number within the logarithm (the argument, in this case 8) and that should work it out, in this case 3.

[@orionsky]

Clear your calculator that should not happen. Your buttons could be failing as they are physically close to each other.

[@TheCalculatorGuide]

That is a possibility. However, if you press that button whilst in LineI/O it comes up as if the regular log has been pressed as the poster described. I believe this is a more likely explanation than button failure, but that may be the problem.

[@purplekitten12]

Thank you! The problem was that my calculator was not in Math mode

[@cowslane1]

@@TheCalculatorGuide thank you! had the same issue and that solved it. Do you know if having the calc in Math mode will disrupt previous uses such as scientific notation? Thanks!

[@jval1236]

may i ask how to solve LOG(120!) on these calcus

[@TheCalculatorGuide]

120 factorial is too large for the calculator I’m afraid.

[@jval1236]

thank you, this is for the reason of i was only allowed to use certain type of a calcu during our test then this question popped up and yeah i still haven't thought of other way to input to get the answer im think of like to get i^100 =( i^2)^50

[@L2Strike2000]

Using Fx-96SG PLUS I can't find that specific log button

[@TheCalculatorGuide]

No it is not on the 96SG. You would have to try the variation with the comma. Eg log(2, 8) = 3

[@letslearn1219]

Why is it that everytime I click the LOG¤¤ buttom it results log( , not log¤¤ that I could not be able to put a bases on the boxes because boxes doesn't exist....pls make video about my concern😇😀

[@TheCalculatorGuide]

You may be in line input or output. It will always just display as log in line mode. Try changing to Math and see if that works.

[@letslearn1219]

Thanks

[@ebony9782]

How do you do this on the fx-82 AU PLUS II

[@TheCalculatorGuide]

You have to use log then lead with the base, comma and then the argument. For example log (2, 8) press equals and you get 3

[@seraph.winter7894]

The Calculator Guide syntax error😭

[@TheCalculatorGuide]

@@seraph.winter7894 Sorry...I don't really know that model...maybe it doesn't work.

[@Undwn_onyx_]

@@TheCalculatorGuide Log( )/log(base)

[@chiraagpatel3494]

@@Undwn_onyx_ you are a legend Nicole, thank you!

[@LalitKumar-go1tz]

i my calculator there is only single log button

[@TheCalculatorGuide]

+Lalit Kumar If it is log to any base then you can input a base of 10 easily. If it only has log, then it may be because it is an older calculator.

[@smgaming5808]

How to use scientific calculator step-by-step tips for finding out in tamil

[@TheCalculatorGuide]

No idea. Can anyone help out?

[@joimundondo8678]

I feel dumb

[@mohamedmire8646]

Awful