Hi All,

I have o problem with simplify. A variable cp1r has been assumed to be positive. Why simplify still has csgn(cp1r) for it? Here is my code:

tmp := subs(cp1t(t)=cp1r, cp2t(t)=cp2r, Ca[2]); 1 / 2 2 ----------- |-cp2r sin(x[1]) sin(x[7]) cp1r 2 2 | cp1r cp2r | \

2 + 2 cp2r sin(x[1]) cos(x[1]) cos(x[7]) sin(x[7]) cp1r +

1 / 2 2 / -------------- \cp2r cos(x[1]) cos(x[7]) sin(x[7]) \ (1/2) / 2\ 2 \cp1r / 2 \\\ -2 cos(x[1]) cos(x[7]) sin(x[1]) + 2 sin(x[1]) cos(x[1])//| | | /assume(cp1r > 0, cp2r > 0);simplify(tmp); 1 / / 3 3 ---------- \sin(x[1]) sin(x[7]) \-cos(x[1]) cos(x[7]) 2 cp1r cp1r

+ 2 cos(x[1]) cos(x[7]) cp1r csgn(cp1r) cp1r

2 3 \ \

- cp1r csgn(cp1r) cp1r + cos(x[1]) cos(x[7])/ csgn(cp1r)/

should csgn(cp1r) be simplified to 1 already? What is wrong with my script?

Thanks

Everett

restart:

f:=exp(-I*Im(s)*(t)); # I is iota, s is a complex number and t is time.simplify(%);

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evalf.mw

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I m trying to simplify an expression involving square roots in Maple. But instead of giving the expected output it is not simplifying it. Please find the attached maple file for reference. I calculated manually and the result is 1. Please help me out for this. Thanx in advance.

Regards

Sunit

Download question.mw

Why nothing changes?

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Download consistency_expmle_4.mw

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(sinh(w) + ln(w))*x

to be automatically called

c*x

Thank you in advance.

Hello.

given this expression

T:=unapply((1/6930)*exp(-(1/7938)*(X[4]-933)^2)*exp(-(1/6050)*(X[2]-805)^2)/((1+exp((1/50)*X[4]-(1/50)*X[2]))*Pi),X[2]);

U := unapply(sum(T(X[2]), X[4] = 0 .. 3600), X[2]):

I want to display U, but not all 3600 terms. is there anyway to simplify/reduce this sum?

kind of like geo series a+ar+ar^2+ar^3+...+ar^(n-1)=sum(ar^k,k=0..n-1) can be reduced to a*(1-r^n)/(1-r)

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I am trying to simplify sums of a few LaguerreL polinomials of different n using the identities in the function advisor such as recurrsion relations. How does one go about in using the FunctionAdvisor identities when trying to simplify expressions containing orthogonal polynomials?

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