Question

Finding Point Of Inflection
http://puu.sh/dfdGC/cc662f8bb9.png

Answer 1

diracdelta how long did it take for you to get this skill at maths?

Answer 2

Remember inflection points mean the concavity of the curve changes direction. That means the second derivative = 0 ;) find the x where that happens

Answer 3

@Kittens4Mittens about 3 minutes :P. No I'm just kidding, math and physics are my life, I do this for a living :)

Answer 4

to get the points i derive then set = to zero and then i should get 2 numbers and then i get 2nd derivative then plug those numbers in to check concavity?

Answer 5

damn so cool dirac

Answer 6

No you just need to take the second derivative of 1/(2x^2 + 6). Once you get your function for the second derivative, set it equal to zero and find the roots :)

Answer 7

http://gyazo.com/e2567534deb2ce39772850e228a7072b

Answer 8

Looks the concavity is changing two times in the interval (-4, 4). When you solve f''(x) = 0 you should get something in this interval