marjae188jackson
02.02.2020 •
Mathematics
Let f(x) = x2 − 81. find f−1(x). (1 point)
±square root of the quantity x plus 81
9 square root of x
1 over quantity x squared minus 81
x squared over 81
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Ответ:
y + 81 = x^2
x = sqrt(y + 81)
switch y to x, x to y
y = sqrt(x + 81) = f-1(x)
Ответ:
The person will feel dizzy.