Q. Find the inverse function of the function f(x)=−98x.f−1(x)=98xf−1(x)=−89xf−1(x)=89xf−1(x)=−98x
Understand Inverse Function: Understand the concept of an inverse function. The inverse function of f(x), denoted as f−1(x), is a function that reverses the effect of f(x). If f(x) takes an input x and produces an output y, then f−1(x) takes y as an input and produces the original x as an output. To find the inverse function, we need to solve the equation y=−98x for x in terms of y.
Write Original Function: Write the original function with y as the output.Let y=f(x), so we have:y=−98x
Swap x and y: Swap x and y to find the inverse function.To find the inverse, we switch the roles of x and y, so we get:x=−98y
Solve for y: Solve for y in terms of x.Now we need to solve the equation for y:x=−98yMultiply both sides by −89 to isolate y:y = \left(-\frac{\(9\)}{\(8\)}\right)x
Write Inverse Function: Write the inverse function.\(\newlineThe inverse function, f−1(x), is then:f−1(x)=8−9x
More problems from Multiplication with rational exponents