Q. For the function f(x)=7−2x5, find f−1(x).Answer: f−1(x)=
Rewrite function 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 rewriting the function with y instead of f(x):y=7−2x5
Switch x and y: Now, switch x and y to find the inverse: x=7−2y5
Multiply both sides: Next, we solve for y. Start by multiplying both sides of the equation by (7−2y) to get rid of the fraction:x×(7−2y)=5
Distribute x: Distribute x on the left side of the equation: 7x−2xy=5
Isolate terms with y: Now, we want to isolate terms with y on one side. Let's move 7x to the right side by subtracting it from both sides:−2xy=5−7x
Divide by −2x: To solve for y, divide both sides by −2x (assuming x is not zero, as division by zero is undefined):y=−2x5−7x
Simplify the expression: We can simplify the expression by distributing the negative sign:y=2x−5+7x
Write as f−1(x): This is the inverse function, so we can now write it as f−1(x):f−1(x)=2x−5+7x
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