Question

what is the minimum value of the function f(x)= 2x^2-10x+5?

Answer 1

are you allowed to use calculus?

Answer 2

yes, which ever way i will be able to get the answer.

Answer 3

differentiate once

Answer 4

then set it to 0

Answer 5

then solve for x. after that differentiate again to determine if its a max. or min.
concave up => min.
concave down => max.

Answer 6

like you sub the x into the equation where you differentiated twice and determine it

Answer 7

this should be fun

Answer 8

indeed. margejean; if you have any problems with this method please respond.

Answer 9

could you please help me step by step?

Answer 10

first differentiate f(x) = 2x^2-10x+5 with respect to x to get:
f'(x) = 4x-10

Do you get how I did that?