4e(x^3+3x) + 3x

4e^{x^{3}+3x}+3x

This is not that bad. It's just a little chain rule.

\frac{d}{dx}e^{x^{3}+3x}=(3x^{2}+3)e^{x^{3}+3x}

Take the derivative of the e power and multiply by the e^{x^{3}+3x}

That's basically what the chain rule is. The derivative of the inside times the derivative of the outside.

Don't forget to multiply by 4. The derivative of 3x is easy.

4e(x^3+3x) + 3x

I am a little bit dissapointed as this question was asked before and I provided the help you needed. If you were still unclear you shouldn't have made another post but rather asked more questions on your original post.

https://www.askmehelpdesk.com/math-sciences/derivative-411514.html