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Let space space space space space straight y equals log open parentheses square root of fraction numerator 1 minus cos space straight x over denominator 1 plus cos space straight x end fraction end root close parentheses equals log open parentheses square root of fraction numerator 2 sin squared begin display style straight x over 2 end style over denominator 2 cos squared begin display style straight x over 2 end style end fraction end root close parentheses equals log open parentheses tan straight x over 2 close parentheses therefore space dy over dx equals fraction numerator 1 over denominator tan straight x over 2 end fraction. sec squared straight x over 2.1 half equals fraction numerator cos begin display style straight x over 2 end style over denominator sin begin display style straight x over 2 end style end fraction. fraction numerator 1 over denominator cos squared begin display style straight x over 2 end style end fraction.1 half equals fraction numerator 1 over denominator 2 sin begin display style straight x over 2 end style cos begin display style straight x over 2 end style end fraction space space space space space space space space space space space space space equals fraction numerator 1 over denominator sin space straight x end fraction equals cosec space straight x

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312. Differentiate :

log space sin square root of straight x squared plus 1 end root

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313.

If space straight y equals log square root of fraction numerator 1 plus cos squared straight x over denominator 1 minus straight e squared straight x end fraction end root comma space find space dy over dx

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314.

If space equals log square root of fraction numerator 1 plus sin squared straight x over denominator 1 minus tan space straight x end fraction end root comma space find space dy over dx.

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315. Differentiate the following functions w.r.t.x:

square root of 1 plus tan space straight x end root

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316. Differentiate the following functions w.r.t.x:

square root of 1 plus cot space straight x end root

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317. Differentiate the following functions w.r.t.x:

sin space 2 straight x. cos space 3 straight x

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318. Differentiate the following functions w.r.t.x:

straight x space cot cubed straight x

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319. Differentiate the following functions w.r.t.x:

straight e to the power of negative straight x squared end exponent. sin left parenthesis log space straight x right parenthesis

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320. Differentiate the following functions w.r.t.x:

straight e to the power of sin space straight x end exponent. sine to the power of straight x

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