Question

Find the extreme values of the function on the interval and where they occur.
f(x) = 1x - 2; -3 ≤ x ≤ 4

Answer 1

what is your function f(x) = x - 2??

Answer 2

im not sure. thats all the question says. im supposed to give a minimum and maximum

Answer 3

normally people do not write 1x-2
(they just write x-2)
so I am suspicious that the function is something else.

Answer 4

can you take a screen shot of the question?

Answer 5

yes hold on

Answer 6

@phi

Answer 7

@phi wrong question! sorry

Answer 8

ok heres the queston @phi

Answer 9

OK, it is probably a goofy equation generated automatically by a computer.

to find the extreme values of
f(x) = 1x - 2; -3 ≤ x ≤ 4 (or any function)
you do three things:
1. evaluate f(x) at the lower limit
2. evaluate f(x) at the upper limit
3. take the derivative, and solve for when equal to 0

for step 3: f'(x) = 1
which is never equal to 0. so the extreme values will only be from steps 1 and 2.

Answer 10

of course, you do not need calculus for this problem. It is a straight line going up from left to right... so the min value will be at the left side of the interval (at x=-3) and the max value will be when x=4

Answer 11

ok so of those answers its b?

Answer 12

@phi i got b "Maximum is 6 at x = 4; minimum value is - 1 at x = -3"

Answer 13

f(x) = 1x - 2
at x=-3 we get -3-2 = -5

at x= +4 we get 4-2 = 2

you must have done something different from the steps I gave in the other post.

Answer 14

ok i was redoing my work and found what i did wrogn. thanks