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(x)*(exp(-x^2))

Derivative of (x)*(exp(-x^2))

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

The graph:

from to

Piecewise:

The solution

You have entered [src]
     2
   -x 
x*e   
xex2x e^{- x^{2}}
  /     2\
d |   -x |
--\x*e   /
dx        
ddxxex2\frac{d}{d x} x e^{- x^{2}}
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)=ex2g{\left(x \right)} = e^{x^{2}}.

    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. Let u=x2u = x^{2}.

    2. The derivative of eue^{u} is itself.

    3. Then, apply the chain rule. Multiply by ddxx2\frac{d}{d x} x^{2}:

      1. Apply the power rule: x2x^{2} goes to 2x2 x

      The result of the chain rule is:

      2xex22 x e^{x^{2}}

    Now plug in to the quotient rule:

    (2x2ex2+ex2)e2x2\left(- 2 x^{2} e^{x^{2}} + e^{x^{2}}\right) e^{- 2 x^{2}}

  2. Now simplify:

    (12x2)ex2\left(1 - 2 x^{2}\right) e^{- x^{2}}


The answer is:

(12x2)ex2\left(1 - 2 x^{2}\right) e^{- x^{2}}

The graph
02468-8-6-4-2-10102-2
The first derivative [src]
          2      2
     2  -x     -x 
- 2*x *e    + e   
2x2ex2+ex2- 2 x^{2} e^{- x^{2}} + e^{- x^{2}}
The second derivative [src]
                   2
    /        2\  -x 
2*x*\-3 + 2*x /*e   
2x(2x23)ex22 x \left(2 x^{2} - 3\right) e^{- x^{2}}
The third derivative [src]
                                    2
  /        2      2 /        2\\  -x 
2*\-3 + 6*x  - 2*x *\-3 + 2*x //*e   
2(2x2(2x23)+6x23)ex22 \left(- 2 x^{2} \cdot \left(2 x^{2} - 3\right) + 6 x^{2} - 3\right) e^{- x^{2}}
The graph
Derivative of (x)*(exp(-x^2))