Question

How do you find the inflection point of f(s) = 2s^3+18s^2+5

Answer 1

differentiate f(s) wif respect to s.
at inflection point, second derivative equal to zero.

Answer 2

so I have (-6, 0) is that right?

Answer 3

i got s=-3

Answer 4

(-3,-97)

Answer 5

y' = 6s^2 + 36s
y'' = 12s

y'' = 0 when x = 0 if I did it right

Answer 6

and I didnt

Answer 7

y'' = 12s +36 :)

s= -36/12 = -3

Answer 8

f(-3) = 2(-3)^3+18(-3)^2+5

f(-3) = 2(-27) +18(9) +5

f(-3) = -54 +162 +5

f(-3) = -54 +167 = 113 I hope :)

Answer 9

the cord should be (-3,113)

Answer 10

you are right