What is the inverse of f(x)=-sqrt(81-x^2) ?

The inverse of f(x)=-sqrt(81-x^2) is sqrt(-x^2+81),-sqrt(-x^2+81)

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inverse of f(x)=-sqrt(81-x^2)

inverse

f (x) = - 81 - x^{2}

- x^{2} + 81, - - x^{2} + 81

Solution steps

y = - 81 - x^{2}

Replace

x

with

y

x = - 81 - y^{2}

Solve for

y, x = - 81 - y^{2}

- x^{2} + 81, - - x^{2} + 81

y = (x - 2)^{2}

\frac{9}{\frac{x}{x + 9}}

f (x) = x + 2

f (x) = \frac{4}{3 - x}

y = x^{3} - 27

What is the inverse of f(x)=-sqrt(81-x^2) ?
The inverse of f(x)=-sqrt(81-x^2) is sqrt(-x^2+81),-sqrt(-x^2+81)