Question

Find the critcal numbers of the equation.

Answer 1

\[t^4+t^3+t^2+1\]

Answer 2

\[4t^3+3t^2+2t+0\]

Answer 3

u mean, find the critical points of the function
\[ \large f(t)=t^4+t^3+t^2+1 \]

Answer 4

Yes, my mistake :)

Answer 5

\[t(4t^2+3t+2)=0\]

Answer 6

good

Answer 7

go ahead. solve it.

Answer 8

\[\frac{ -6 \pm \sqrt{-7}}{ 8 }\]

Answer 9

and 0

Answer 10

wait,

Answer 11

there is a mistake

Answer 12

\[\frac{ -6\pm \sqrt{-21} }{ 8 }\]

Answer 13

the book just says the answer is 0

Answer 14

still wrong
\[ \large \frac{-3\pm\sqrt{-21}}{8} \]

Answer 15

this numbers are complex. so they don't count!!

Answer 16

wow duh! my mistake

Answer 17

thank you @helder_edwin !!!!!!!!

Answer 18

u r welcome. good work