Mister Exam

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The derivative of the function/ 2sin(x)-cos(x)

Derivative of 2sin(x)-cos(x)

The solution

You have entered [src]

2*sin(x) - cos(x)

$$2 \sin{\left(x \right)} - \cos{\left(x \right)}$$

2*sin(x) - cos(x)

Detail solution

Differentiate $2 \sin{\left(x \right)} - \cos{\left(x \right)}$ term by term:
1. The derivative of a constant times a function is the constant times the derivative of the function.
  1. The derivative of sine is cosine:
    
    $\frac{d}{d x} \sin{\left(x \right)} = \cos{\left(x \right)}$
  So, the result is: $2 \cos{\left(x \right)}$
2. The derivative of a constant times a function is the constant times the derivative of the function.
  1. The derivative of cosine is negative sine:
    
    $\frac{d}{d x} \cos{\left(x \right)} = - \sin{\left(x \right)}$
  So, the result is: $\sin{\left(x \right)}$
The result is: $\sin{\left(x \right)} + 2 \cos{\left(x \right)}$

The answer is:

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

The graph

Plot the graph f(x)

Plot the graph f'(x)

The first derivative [src]

2*cos(x) + sin(x)

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

Simplify

The second derivative [src]

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

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

Simplify

The third derivative [src]

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

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

Simplify

The graph

Derivative of 2sin(x)-cos(x)