A-Level Maths: E6-13 Equivalent Forms: Maximums and Minimums

[@urboyliiban]

Ah great timing. I literally learnt this today. Was struggling with the graphs.

[@lily.samuel8560]

Ur explanation is simple yet understandable.. just perfect 💕💕💕

[@theflimsboy7730]

You're the man!! got my P3 tomorrow

[@laynechichi1198]

You are the best thank you so much just found these a few hours before my end of year

[@sherigeorge5874]

Thank you so much, can u do more of these??

[@TLMaths]

If there's a specific question you've found you need help on - let me know and I'll help

[@kakashi2409]

If I watch all 1000 of ur vids and do all the past papers do u think ill get an A*?

[@TLMaths]

Try it and see. Let me know how you get on.

[@kakashi2409]

@@TLMaths lool you never know

[@hypedmaniac8444]

So did it work?

[@star-sl8wv]

Did it work??

[@sashamelnic5565]

Legend says he is still watching

[@idropz]

This topic is going to be on AQA A-level Maths Paper 2, Section A, 2024

[@DopeNacs]

Why do you ignore the value of alpha as a translation parallel to the x-axis? Is it because there’s no range for the graph??

[@TLMaths]

Translating the graph horizontally will not affect the range of the function (the range is the set of y-values, which won't change as the graph is not moving up or down).

[@rabia4886]

Why did you just ignore the sin... on the denominator I don't really understand that part

[@TLMaths]

Not sure what you mean by ignoring the sin? In calculating the min/max, you consider when sin(theta+79.7) is 1 or -1, as that are its two extreme values.

[@user-jt5cv5hg3n]

when do you know to work in radians or degrees?

[@TLMaths]

To find the maximum or minimum value, it doesn't matter. If you're told to find alpha or solve an equation, then you'll be told which to use.

[@jay_jaygwiza3366]

thanks man!!! you know how to explain this topic

[@elenawong4431]

Thank you so much

[@freerights6695]

I don't see how you got 40/(20+/-5sqrt(5)) for the max/min values.

[@TLMaths]

sin(theta+79.7) goes between -1 and 1. So 5sqrt(5)*sin(theta+79.7) goes between -5sqrt(5) and 5sqrt(5). So the denominator goes between 20-5sqrt(5) and 20+5sqrt(5) So the fraction goes between 40/(20+5sqrt(5)) and 40/(20-5sqrt(5))

[@freerights6695]

@@TLMaths I kinda get it, thank you.

[@ليلى-ر6ظ3ف]

lifesaver