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Popular Functions >

inverse of y=x^2+x-1

Solution

inverse

y = x^{2} + x - 1

Solution

\frac{- 1 + 4 x + 5}{2}, \frac{- 1 - 4 x + 5}{2}

Solution steps

y = x^{2} + x - 1

Replace

x

with

y

x = y^{2} + y - 1

Solve for

y, x = y^{2} + y - 1

\frac{- 1 + 4 x + 5}{2}, \frac{- 1 - 4 x + 5}{2}

Graph

Popular Examples

parity f(x)=x^5+3x^4

domain of f(x)=|x-4|

monotone x^4-4/3 x^3-4x^2+7

intercepts of f(x)=2x^2+5x+3

Frequently Asked Questions (FAQ)

What is the inverse of y=x^2+x-1 ?
The inverse of y=x^2+x-1 is (-1+sqrt(4x+5))/2 ,(-1-sqrt(4x+5))/2