Now, the question stem says that y > 0 . Since
is negative, so is negative. So the value of y is . Using the calculator,
. Thus, y â 6.14.
37 . A
Set . To find the inverse, switch the values of x and y and then solve for y:
This is equivalent to
8(7x) = y
Therefore, fâ1(x) = 8(7x).
38 . C
Using the defining equation with n = 1, you have
Thus,
Using the defining equation with n = 2, you have
Thus, .