Question

The function f is defined by f(x)=-✓x write down the expression for k(x)

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Answer 1

The expression for k(x) is k(x) = x.

The function k(x) can be found by applying the inverse operation to the given function f(x) = -√x. Since the inverse operation of taking the square root is squaring, we can express k(x) as follows:

k(x) = (-√x)2

Simplifying further:

k(x) = (-1)2*(√x)2

k(x) = 1*x

Therefore, the expression for k(x) is k(x) = x.