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(2*sin(7*x^3))'The calculation above is a derivative of the function f (x)
(2)'*sin(7*x^3)+2*(sin(7*x^3))'
0*sin(7*x^3)+2*(sin(7*x^3))'
0*sin(7*x^3)+2*cos(7*x^3)*(7*x^3)'
0*sin(7*x^3)+2*cos(7*x^3)*((7)'*x^3+7*(x^3)')
0*sin(7*x^3)+2*cos(7*x^3)*(0*x^3+7*(x^3)')
0*sin(7*x^3)+2*cos(7*x^3)*(0*x^3+7*3*x^(3-1))
0*sin(7*x^3)+2*cos(7*x^3)*(0*x^3+7*3*x^2)
0*sin(7*x^3)+2*21*x^2*cos(7*x^3)
42*x^2*cos(7*x^3)
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