Question

{Derivatives, Focus: Chain Rule. Help appreciated}
\(\ \Huge y=cos(a^3+x^3) . \)

Answer 1

Is a a constant?

Answer 2

are you differentiating with respect to x..?

Answer 3

or a? :P .

Answer 4

Yes @campbell_st. I'm not sure @Dido525

Answer 5

That means a is a constant I assume O_o .

Answer 6

\(\
\text{ I got to this point, but my text tells me this answer is incorrect: }
y'=-sinx(3a^2+3x^2).
\)