Mister Exam

Derivative of x/x

Function f() - derivative -N order at the point
v

The graph:

from to

Piecewise:

The solution

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x
-
x
xx\frac{x}{x}
d /x\
--|-|
dx\x/
ddxxx\frac{d}{d x} \frac{x}{x}
Detail solution
  1. Apply the quotient rule, which is:

    ddxf(x)g(x)=f(x)ddxg(x)+g(x)ddxf(x)g2(x)\frac{d}{d x} \frac{f{\left(x \right)}}{g{\left(x \right)}} = \frac{- f{\left(x \right)} \frac{d}{d x} g{\left(x \right)} + g{\left(x \right)} \frac{d}{d x} f{\left(x \right)}}{g^{2}{\left(x \right)}}

    f(x)=xf{\left(x \right)} = x and g(x)=xg{\left(x \right)} = x.

    To find ddxf(x)\frac{d}{d x} f{\left(x \right)}:

    1. Apply the power rule: xx goes to 11

    To find ddxg(x)\frac{d}{d x} g{\left(x \right)}:

    1. Apply the power rule: xx goes to 11

    Now plug in to the quotient rule:

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The answer is:

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The first derivative [src]
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The second derivative [src]
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The third derivative [src]
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