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Limits Continuity and Differentiability question

2020 · 3 Sep · Shift 1 · Q39
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  5. /2020 · 3 Sep · Shift 1 · Q39

Limits Continuity and Differentiability question

2020 · 3 Sep · Shift 1 · Q39

JEE MainMathematicsLimits Continuity and DifferentiabilityNumerical+4 / −1
If lim⁡x→0{1x8(1−cos⁡x22−cos⁡x24+cos⁡x22cos⁡x24)}\mathop {\lim }\limits_{x \to 0} \left\{ {{1 \over {{x^8}}}\left( {1 - \cos {{{x^2}} \over 2} - \cos {{{x^2}} \over 4} + \cos {{{x^2}} \over 2}\cos {{{x^2}} \over 4}} \right)} \right\}x→0lim​{x81​(1−cos2x2​−cos4x2​+cos2x2​cos4x2​)} = 2-k then the value of k is ‾\underline{\hspace{2cm}}​ .
Numerical answer
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