y' = 3e^(3x) - 6e^3
y' = 0
--->
3e^(3x) = 6e^3
e^(3x) = e^3
3x = 3
x = 1

y' = 3e^(3x) - 6e^3
y' = 0
--->
3e^(3x) = 6e^3
e^(3x) = e^3
3x = 3
x = 1

e^(3x) = 2e^3 / ln
ln (e^3x) = ln (2e^3) = ln 2 + ln (e^3)
3x = ln 2 + 3
x = (ln2/3) + 1 ~ 1.231 If you want

y'' = 3e^(3x)
y'' > 0 Because e^x > 0 for all x.

נציב n = 3k לאחר שמצאנו הצגה פולרית:
A = [(Cis 120)^3]^n + [(Cis 240)^3]^n = Cis 360 ^ n + Cis 720^ n
Now:
Sin 360 = 0
Sin 720 = 0
-->
Im(A) = 0+0 = 0

y=4.5x + 1.806