how do you sketch fx=x^5+4x^3-16x over the interval [-3,3] (sketch by hand)

I found these so far:
domain: (-inf,inf)
y-intercepts: 0
x-intercepts: +-1.57
its odd so symmetric on the origin
no asymptotes
f'(x)=5x^4 + 12x^2 -16
f"(x)=20x^3+24x

Question

how do you sketch fx=x^5+4x^3-16x over the interval [-3,3] (sketch by hand)

I found these so far: 
domain: (-inf,inf)
y-intercepts: 0
x-intercepts: +-1.57
its odd so symmetric on the origin
no asymptotes
f'(x)=5x^4 + 12x^2 -16
f"(x)=20x^3+24x

anonymous · Answer

aaronq only helped you on 17/144 . Not like in your testimonial how he "literally" helped you on all your questions. -_-

anonymous · Answer

Your testimonial to aaronq:
This is literally the best person on this website. "He has helped in every single question i have ever posted!" thank you so much!!!! i freakin love you (no homo)

He helped you on 17. Not 144. -_-