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Sum of series cos(5*x)*sin(2*x)



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The solution

You have entered [src]
  15                   
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  )   cos(5*x)*sin(2*x)
 /_,                   
n = 1                  
$$\sum_{n=1}^{15} \sin{\left(2 x \right)} \cos{\left(5 x \right)}$$
Sum(cos(5*x)*sin(2*x), (n, 1, 15))
The answer [src]
15*cos(5*x)*sin(2*x)
$$15 \sin{\left(2 x \right)} \cos{\left(5 x \right)}$$
15*cos(5*x)*sin(2*x)

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