Derrivitives i need help asap?

Question

Please help me find the derivitives of
1) 7arcsin(x^3)
2) 1/(6x^4-2)^5
3) 4x^4arctan(8x^2)

Answer 1

= 7/sqrt(1-x^3)(3x^2)= 21x^2/(1-x^3)

= [-5(6x^4-2)^4 (24x^3]/(6x^4-2)^10
=[-120x^3(6x^4-2)^4]/[6x^4-2]^10

=16x^3(arctan(8x^2) + 4x^4 (16x)/(1+8x^2)
= 16x^3(arctan(8x^2)+64x^5/(1+8x^2)

Answer 2

here is a website that might help