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# Find the derivative of $4\sin\left(x\right)\cos\left(x\right)$

## Step-by-step Solution

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### Videos

$4\cos\left(2x\right)$
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## Step-by-step Solution

Problem to solve:

$\frac{d}{dx}\left(4\sin\left(x\right)\cdot \cos\left(x\right)\right)$

Specify the solving method

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The derivative of a function multiplied by a constant ($4$) is equal to the constant times the derivative of the function

$4\frac{d}{dx}\left(\sin\left(x\right)\cos\left(x\right)\right)$

Learn how to solve differential calculus problems step by step online.

$4\frac{d}{dx}\left(\sin\left(x\right)\cos\left(x\right)\right)$

Learn how to solve differential calculus problems step by step online. Find the derivative of 4sin(x)cos(x). The derivative of a function multiplied by a constant (4) is equal to the constant times the derivative of the function. Apply the product rule for differentiation: (f\cdot g)'=f'\cdot g+f\cdot g', where f=\sin\left(x\right) and g=\cos\left(x\right). The derivative of the sine of a function is equal to the cosine of that function times the derivative of that function, in other words, if {f(x) = \sin(x)}, then {f'(x) = \cos(x)\cdot D_x(x)}. The derivative of the cosine of a function is equal to minus the sine of the function times the derivative of the function, in other words, if f(x) = \cos(x), then f'(x) = -\sin(x)\cdot D_x(x).

$4\cos\left(2x\right)$
SnapXam A2

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0
a
b
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f
g
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u
v
w
x
y
z
.
(◻)
+
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×
◻/◻
/
÷
2

e
π
ln
log
log
lim
d/dx
Dx
|◻|
θ
=
>
<
>=
<=
sin
cos
tan
cot
sec
csc

asin
acos
atan
acot
asec
acsc

sinh
cosh
tanh
coth
sech
csch

asinh
acosh
atanh
acoth
asech
acsch

### Tips on how to improve your answer:

$\frac{d}{dx}\left(4\sin\left(x\right)\cdot \cos\left(x\right)\right)$

### Main topic:

Differential Calculus

~ 0.04 s