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Inverse Functions
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Qn #1729
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00:00
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If the function $f:[1,\infty)\to[1,\infty)$ is defined by $f(x)=2^{x(x-1)}$, then $f^{-1}(x)$ is:
A.
$\left(\dfrac12\right)^{x(x-1)}$
B.
$\dfrac12\left(1+\sqrt{1+4\log_{2}x}\right)$
C.
$\dfrac12\left(1-\sqrt{1+4\log_{2}x}\right)$
D.
not defined
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Qn #1179
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Which of the following function is the inverse of itself?
A.
B.
C.
D.
None of these
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Inverse Functions Practice Questions | Group Studies Library | Tancet Group Studies