Question

If f(x)=(1/3)x^3, then find k so that f(k)-f(3)=0

Answer 1

what do you think?

Answer 2

So you plug in K to the equation and 3 to the equation, and subtract?

Answer 3

when does subtraction equate to zero?

Answer 4

When both subtracting terms are the same.

Answer 5

or equivalent.

Answer 6

a-b=0, if a=b yes

Answer 7

so f(k) has to be equal to f(3), what is k?

Answer 8

So i just plug in a 3 and the answer will be the value of k?

Answer 9

f(k) - f(3) = 0, implies that f(k) = f(3) yes

Answer 10

1/3 (k^3) - 1/3 (3^3) = 0

1/3 (k^3 - 3^3) = 0

k^3 - 3^3 = 0

k^3 = 3^3

Answer 11

so K=3

Answer 12

yep ...

Answer 13

Haha, okay Thanks!

Answer 14

yw