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Simple Calculus Question: Differentiating Square Root Fraction
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[QUOTE="nil1996, post: 4482189, member: 475181"] [h2]Homework Statement [/h2] [itex]\sqrt{\frac{1-cos2x}{1+cos2x}}[/itex] differentiate with respect to x [h2]Homework Equations[/h2] none [h2]The Attempt at a Solution[/h2] i have simplified it by substituting cos2x as 1-2sin[SUP]2[/SUP]x and 2cos[SUP]2[/SUP]x-1 I have got the answer as sec[SUP]2[/SUP]x but my textbook says the ans is [itex]\frac{tanx}{|tanx|}[/itex]sec[SUP]2[/SUP]x why?? please help [/QUOTE]
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Simple Calculus Question: Differentiating Square Root Fraction
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