Question

I need help in finding absolute minimum and maximum..
please tell em whats wrong!!

Answer 1

here is the quetion

Answer 2

do you know how to differentiate?

Answer 3

its 3x^2 +12x -63

Answer 4

yeah?

Answer 5

yes
now use this
maxima/minima occur at either boundary points or at points where df/dx=0

Answer 6

first can u find points where df/dx=0?

Answer 7

x=-7

Answer 8

then what ?

Answer 9

not just -7, theres one more point

Answer 10

df/dx=0 is a quadratic equation, it has two solutions

Answer 11

can we get straight to the answer please... -_- im running out of time TT^TT

Answer 12

8 minutes left -.-

i give up

Answer 13

i can tell you the steps,
evaluate f(x) at the points where df/dx=0
evaluate f(x) at all the boundary points: -8,0,-5,4
and see which points are max and min

Answer 14

i see it later , but thanks anyway

Answer 15

:)