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Differentiate with respect to x,`(x+1/x)^(3)` |
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Answer» Let `y=(x+1/x)^(3)` `therefore (dy)/(dx) = d/(dx)(x+1/x)^(3)= 3(x+1/x)^(3-1)d/(dx)(x+1/x)` [by chain rule] `=3(x+1/x)^(2)(1-1/x^(2))` `=3x^(2)-3/x^(2)-3/x^(4)+3` |
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