Q. What is the inverse of the function y=log3x?(1) y=x3(3) y=3x(2) y=logx3(4) x=31y
Definition of Inverse Function: Understand the definition of an inverse function.The inverse function of y=log3(x) is a function that will give back the original input x when applied to the output y. In other words, if we have y=log3(x), then the inverse function applied to y should give us x.
Express in Exponential Form: Express the original function in exponential form.To find the inverse, we can rewrite the logarithmic equation y=log3(x) in its equivalent exponential form. This is done by using the definition of a logarithm: if y=logb(x), then by=x. Applying this to our function, we get 3y=x.
Swap x and y: Swap x and y to find the inverse function.To find the inverse function, we switch the roles of x and y. This means we will now have x=3y.
Solve for y: Solve for y to express the inverse function.Now we need to express y in terms of x. Since x=3y, we can take the logarithm base 3 of both sides to isolate y. This gives us y=log3(x). Therefore, the inverse function is y=log3(x).
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