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(3^y*sin(2*x+y))'The calculation above is a derivative of the function f (x)
(3^y)'*sin(2*x+y)+3^y*(sin(2*x+y))'
0*sin(2*x+y)+3^y*(sin(2*x+y))'
0*sin(2*x+y)+3^y*cos(2*x+y)*(2*x+y)'
0*sin(2*x+y)+3^y*cos(2*x+y)*((2*x)'+(y)')
0*sin(2*x+y)+3^y*cos(2*x+y)*(2*(x)'+(y)'+(2)'*x)
0*sin(2*x+y)+3^y*cos(2*x+y)*(2*(x)'+(y)'+0*x)
0*sin(2*x+y)+3^y*cos(2*x+y)*((y)'+0*x+2*1)
0*sin(2*x+y)+3^y*(0+2)*cos(2*x+y)
0*sin(2*x+y)+3^y*2*cos(2*x+y)
2*3^y*cos(2*x+y)
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