Q. For the function f(x)=1−4x10+3x, find f−1(x).Answer: f−1(x)=
Replace with y: To find the inverse function, f−1(x), we need to switch the roles of x and y in the original function and then solve for y. Let's start by replacing f(x) with y:y=1−4x10+3x
Interchange x and y: Now, interchange x and y to find the inverse: x=1−4y10+3y
Eliminate the fraction: Next, we need to solve for y. Start by multiplying both sides of the equation by (1−4y) to eliminate the fraction:x⋅(1−4y)=10+3y
Move terms around: Distribute x on the left side of the equation:x−4xy=10+3y
Factor out y: Now, we want to get all the terms with y on one side and the constant terms on the other side. Let's move the 3y term to the left side and the x term to the right side:4xy+3y=10−x
Divide to solve for y: Factor out y from the left side of the equation:y(4x+3)=10−x
Final Inverse Function: Now, divide both sides by (4x+3) to solve for y:y=4x+310−x
Final Inverse Function: Now, divide both sides by (4x+3) to solve for y:y=4x+310−xWe have found the inverse function. Therefore, the inverse function f−1(x) is:f−1(x)=4x+310−x
More problems from Write a formula for an arithmetic sequence