Math

[The LOLer]

I HATE MatH!!!
Anyways post a math problem and the next person will try to solve it and give a new problem.

[TheBigUnit]

easy one

y = cos^2(2x)

dy/dx = ?

[pineinchneis]

um, i can't do the cos^2 bit but

y = 2x
dy/dx = 2


(2+x)^9 expand up to the term x^5

[NeuroTiger]

easy one

y = cos^2(2x)

dy/dx = ?

dy/dx=-2sin4x

um, i can't do the cos^2 bit but

y = 2x
dy/dx = 2


(2+x)^9 expand up to the term x^5

Ans:512+2304x+4608(x^2)+5376(x^3)+4032(x^4)+2016(x^5)



Question:
Find the exact value for tanB if
tanA=0.6 and tan(A+B)=2.25.

[kylem1229]

Pfft..screw that.

2+2, if the person below me fails....go to kindergarden.

[Scooby Dooby Drew]

4, in base 10 at least.

Question:
Find the exact value for tanB if
tanA=0.6 and tan(A+B)=2.25.
Assuming we're only in the interval -π/2 <= x <= π/2
~0.612.

limit as x approaches infinity of (1 + 1/x)^x is...?