(Solved): determine the intervals on which the following function is concave up or concave down. identify any ...

$f(x)=5x^4?10x^3+10$ Determine the intervals on which the following functions are concave up or concave down. Select the correct chcice below and fil in the answer box(es) to corrplete your choice. (Simplify your answer. Type your answer in interval notatien. Use a comma to separate answers as needed.) A. The function is concave up on and concave down on 8. The function is concave down on c. The function is concave up on Locate any inflection points of $t$. Select the oorrect choice below and, if necessary, fit in the answer bex to complese your choice A. An inflection point occurs at $x=$ (Use a comma to separate answers as needed.) B. There are no inflection points for 1 .