Answer :
The value of f(3) for the given function is 120.
We have,
To compute f(3) for the function f(x) = 5x³ - 5x, we need to substitute the value of x with 3 in the function.
When we substitute x = 3 into the function, we get:
f(3) = 5(3)³ - 5(3)
First, we evaluate the exponent, 3³, which is equal to 27.
f(3) = 5(27) - 5(3)
Next, we multiply 5 by 27, which gives us 135.
f(3) = 135 - 5(3)
Then, we multiply 5 by 3, which is 15.
f(3) = 135 - 15
Finally, we subtract 15 from 135 to get the final result:
f(3) = 120
Therefore,
The value of f(3) for the given function is 120.
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