Question

Find F^-1(3)
F(x)=x^5+x^3+x

need help understanding the process to find the answer

Answer 1

F(x) = 3
=>
x = F^-1(3)

Answer 2

you just need to figure out, wat value of x gives u 3 in F(x)

Answer 3

right so if i put \[x ^{5}+x ^{3}+x=3\] and then simplify it just becomes a mess with out graphing im not sure how to find the answer

Answer 4

by inspection x=1 works

Answer 5

analytically solving is tricky

Answer 6

so just randomly plugging a number in that seems to work would be the way to go?

Answer 7

yeah its a degree 5, so humanly impossible. we need to try these by inspection/graphing mostly

Answer 8

ok thanks

Answer 9

np :)