Question

Hey there!
My current homework wants me to show that in the function $y=x^4+ax^{2} +bx$ for $a\ \textgreater \ 0$ there is only one point on the graph where $\frac{dy}{dx}$ equals zero. I do understand why that is the case graphically but I am struggeling to provide mathematical evidence. I tried the following:
$\frac{dy}{dx}=4x^3+2ax+b$$[/tex][tex]=0$

From here I dont know how to solve that equation. Can anybody help me? Tyvm

Answer 1

Answer:

Heyy

sorry dear I can't understand

wht u have written..❤..