# Do you know its property ? -6

Geometry Level 3

Which pair(s) of functions is/are not identical?

(a) $$\log_ex^3$$ & $$3.\log_ex$$

(b) $$\log_ee^x$$ & $$e^{\log_ex}$$

(c) $$\sin(\sin^{-1}x)$$ & $$\sin^{-1}(\sin x)$$

(d) $$\sin^2x+\cos^2x$$ & $$\sec^2x-\tan^2x$$

Note : Two functions are called identical if they have same domain and same range.

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