MCQ
$f(x) = {\log _5}({\log _7}x)$ નું $x > 7$ આગળ વિકલન મેળવો.
- ✓${1 \over {x({\rm{ln}}\,{\rm{5)(ln}}\,{\rm{7)(lo}}{{\rm{g}}_{\rm{7}}}x)}}$
- B${1 \over {x({\rm{ln}}\,{\rm{5)(ln}}\,{\rm{7)}}}}$
- C$\frac{1}{x(\rm{In}\,x)}$
- Dએકપણ નહીં
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