Let f(x)=⎧⎪⎪⎨⎪⎪⎩(72)x−9x−8x+1√2−√1+cosx:x≠0k – InterviewSolution

1.	Let f(x)=⎧⎪⎪⎨⎪⎪⎩(72)x−9x−8x+1√2−√1+cosx:x≠0klog2log3;x=0.If f(x) is continuous function at x=0, then √2k=
Answer» Let $f (x) = ⎧ ⎪⎪ ⎨ ⎪⎪ ⎩ \begin{matrix} \frac{(72)^{x} - 9^{x} - 8^{x} + 1}{\sqrt{2} - \sqrt{1 + cos x}} : & x \neq 0 k log 2 log 3; & x = 0 \end{matrix}$ . If $f (x)$ is continuous function at $x = 0$ , then $\sqrt{2} k =$

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