If and (f*g)'(1)=6 and g'(1)=-1, then g(1)=
a. 5
b. -7
c. 7
d. 5
e. 8
(note: (f*g)'(1) means the derivitive of f(x)g(x) at x=1)
wow, the answer is 5, but why?
ples show all work and logic (don't just refernce to an online solver)

Evaluate cos2θ for cosθ = square root of 3/2

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