rameen hamood

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 Evaluate, to 10 significant figures

 integration of (e^(-x) *sin(x^2/2))/(3+x) with the limits of infinity and 1.

 

Express cos(5t)  in terms of powers of cost and sint. cos(6t)=cos(t)^6+acos(t)^4*sin(t)^2*+bcos(t)^2*sin(t)^4+csin(t)^6.

a=?,b=?c=?

how do we find this through maple?

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