panke

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6 years, 291 days

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These are questions asked by panke

I get this error unter WINDOW 11, with WINDOW10 it was o.k

> lib := cat(kernelopts(mapledir), "/lib/mylibn.mla"); savelib('MYEIGW', lib)

Error, cannot lock repository, C:\Program Files\Maple 13/lib/mylibn.mla

 

restart

A := Omega; assume(Omega > 0); B = Omega

B = Omega

(1)

``

Download assumetest.mw

I have this two expresions

 

e1 := (1/2)*P[psi]^2/(cos(`ϑ`)^2*Ix)

e2 := (1/2)*P[psi]^2/(cos(`ϑ`)^2*Ix)

 

simplify(e1-e2)=-(1/2)*(-P[psi]^2+P[psi]^2)/(cos(`ϑ`)^2*Ix)

 

but 

simplify(-P[psi]^2+P[psi]^2)

is zero 

 

why i dont obtain zero if i use simplify(e1-e2) ??

How can I expand exp(I x) to sin(x)+I*cos(x)

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