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Derivative of log((1+x)/(1+x))

Function f() - derivative -N order at the point
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The solution

You have entered [src]
   /1 + x\
log|-----|
   \1 + x/
log(x+1x+1)\log{\left(\frac{x + 1}{x + 1} \right)}
log((1 + x)/(1 + x))
Detail solution
  1. Let u=x+1x+1u = \frac{x + 1}{x + 1}.

  2. The derivative of log(u)\log{\left(u \right)} is 1u\frac{1}{u}.

  3. Then, apply the chain rule. Multiply by ddxx+1x+1\frac{d}{d x} \frac{x + 1}{x + 1}:

    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)=x+1f{\left(x \right)} = x + 1 and g(x)=x+1g{\left(x \right)} = x + 1.

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

      1. Differentiate x+1x + 1 term by term:

        1. The derivative of the constant 11 is zero.

        2. Apply the power rule: xx goes to 11

        The result is: 11

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

      1. Differentiate x+1x + 1 term by term:

        1. The derivative of the constant 11 is zero.

        2. Apply the power rule: xx goes to 11

        The result is: 11

      Now plug in to the quotient rule:

      00

    The result of the chain rule is:

    00


The answer is:

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The graph
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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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5-я производная [src]
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