anonymous
  • anonymous
If f(x)=(1/3)x^3, then find k so that f(k)-f(3)=0
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
what do you think?
anonymous
  • anonymous
So you plug in K to the equation and 3 to the equation, and subtract?
amistre64
  • amistre64
when does subtraction equate to zero?

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anonymous
  • anonymous
When both subtracting terms are the same.
anonymous
  • anonymous
or equivalent.
amistre64
  • amistre64
a-b=0, if a=b yes
amistre64
  • amistre64
so f(k) has to be equal to f(3), what is k?
anonymous
  • anonymous
So i just plug in a 3 and the answer will be the value of k?
amistre64
  • amistre64
f(k) - f(3) = 0, implies that f(k) = f(3) yes
amistre64
  • amistre64
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
anonymous
  • anonymous
so K=3
amistre64
  • amistre64
yep ...
anonymous
  • anonymous
Haha, okay Thanks!
amistre64
  • amistre64
yw

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