CBSE Class 12-science Answered

domain of function cos^-1(2x-1) ?

Asked by rajeevp3328 | 04 Nov, 2019, 04:26: PM

Expert Answer

Let y=cos^-1(2x-1)

rightwards double arrow 2 x minus 1 equals cos y W e space k n o w space t h a t comma space space cos y element of left square bracket negative 1 comma space 1 right square bracket rightwards double arrow 2 x minus 1 element of left square bracket negative 1 comma space 1 right square bracket rightwards double arrow negative 1 less or equal than 2 x minus 1 less or equal than 1 rightwards double arrow 0 less or equal than 2 x less or equal than 2 rightwards double arrow 0 less or equal than x less or equal than 1 H e n c e comma space d o m a i n space o f space cos to the power of negative 1 end exponent left parenthesis 2 x minus 1 right parenthesis space i s space left square bracket 0 comma space 1 right square bracket.

Answered by Renu Varma | 05 Nov, 2019, 11:52: AM

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