Posted by albert on .
1.Ifg(x)=cos4x,find g'(pie/24).
2.Differentiate y=csc^2 pie*x

trig 
Reiny,
g(x) = cos 4x
g'(x) = 4sin 4x
g(π/24) = 4sin (π/6) = 4(1/2) = 2
y = (csc (πx) )^2
dy/dx = 2(csc (πx) ) (π) (csc (πx) ) (cot (πx) )
simplify as needed