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The derivative of the function/ 2^x*sin^2x

Derivative of 2^x*sin^2x

The solution

You have entered [src]

 x    2   
2 *sin (x)

$$2^{x} \sin^{2}{\left(x \right)}$$

d / x    2   \
--\2 *sin (x)/
dx

$$\frac{d}{d x} 2^{x} \sin^{2}{\left(x \right)}$$

Transform

Detail solution

Apply the product rule:

$\frac{d}{d x} f{\left(x \right)} g{\left(x \right)} = f{\left(x \right)} \frac{d}{d x} g{\left(x \right)} + g{\left(x \right)} \frac{d}{d x} f{\left(x \right)}$

$f{\left(x \right)} = 2^{x}$ ; to find $\frac{d}{d x} f{\left(x \right)}$ :
1. $\frac{d}{d x} 2^{x} = 2^{x} \log{\left(2 \right)}$
$g{\left(x \right)} = \sin^{2}{\left(x \right)}$ ; to find $\frac{d}{d x} g{\left(x \right)}$ :
1. Let $u = \sin{\left(x \right)}$ .
2. Apply the power rule: $u^{2}$ goes to $2 u$
3. Then, apply the chain rule. Multiply by $\frac{d}{d x} \sin{\left(x \right)}$ :
  1. The derivative of sine is cosine:
    
    $\frac{d}{d x} \sin{\left(x \right)} = \cos{\left(x \right)}$
  The result of the chain rule is:
  
  $2 \sin{\left(x \right)} \cos{\left(x \right)}$
The result is: $2^{x} \log{\left(2 \right)} \sin^{2}{\left(x \right)} + 2 \cdot 2^{x} \sin{\left(x \right)} \cos{\left(x \right)}$
Now simplify:

$2^{x} \left(\sin{\left(2 x \right)} - \frac{\log{\left(2 \right)} \cos{\left(2 x \right)}}{2} + \frac{\log{\left(2 \right)}}{2}\right)$

The answer is:

$2^{x} \left(\sin{\left(2 x \right)} - \frac{\log{\left(2 \right)} \cos{\left(2 x \right)}}{2} + \frac{\log{\left(2 \right)}}{2}\right)$

The graph

Plot the graph f(x)

Plot the graph f'(x)

The first derivative [src]

 x    2                x              
2 *sin (x)*log(2) + 2*2 *cos(x)*sin(x)

$$2^{x} \log{\left(2 \right)} \sin^{2}{\left(x \right)} + 2 \cdot 2^{x} \sin{\left(x \right)} \cos{\left(x \right)}$$

Simplify

The second derivative [src]

 x /       2           2         2       2                            \
2 *\- 2*sin (x) + 2*cos (x) + log (2)*sin (x) + 4*cos(x)*log(2)*sin(x)/

$$2^{x} \left(- 2 \sin^{2}{\left(x \right)} + \log{\left(2 \right)}^{2} \sin^{2}{\left(x \right)} + 4 \log{\left(2 \right)} \sin{\left(x \right)} \cos{\left(x \right)} + 2 \cos^{2}{\left(x \right)}\right)$$

Simplify

The third derivative [src]

 x /   3       2                          /   2         2   \               2                 \
2 *\log (2)*sin (x) - 8*cos(x)*sin(x) - 6*\sin (x) - cos (x)/*log(2) + 6*log (2)*cos(x)*sin(x)/

$$2^{x} \left(\log{\left(2 \right)}^{3} \sin^{2}{\left(x \right)} - 8 \sin{\left(x \right)} \cos{\left(x \right)} + 6 \log{\left(2 \right)}^{2} \sin{\left(x \right)} \cos{\left(x \right)} - 6 \left(\sin^{2}{\left(x \right)} - \cos^{2}{\left(x \right)}\right) \log{\left(2 \right)}\right)$$

Simplify

The graph

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Derivative of 2^x*sin^2x

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The solution