Hi,

I have this program which when I run gives me five unique matrices as I want it. I however, when I run it again the enries of the matrices changes and I get 5 identical matrices, how can I prevent this from happening?

Vic

I am trying to solve an optimization problem but I am getting an error message which does not make sense.

I have a procedure file called f. The decsiion vector is x[1..4]. and returns the objective function value Ls.

I then specify the constraints as a set and ask it to optimize

constraints:={x[1]+x[2]+x[3]+x[4]=65,x[1]<=20,x[2]<=15,x[3]<=20,x[4]<=15};

sol := NLPSolve( f,constraints, assume=nonnegative,minimize);

Error, (in Optimization:-NLPSolve) constraints must be specified as a set or list of procedures

This error makes no sense to me. Can anyone help?

 Hello,every one,i want to solve system of equations but i recieve an error ,how can i find the coeffecients c1,c2,c3,c4?thank.

Download Numerical.mw

Hi,

Here is my question.

I am trying to substitute value of lambda(t-t1) further but it is not taking the value.

Thanks in advance.

Regards

Sunit

Download question2.mw

#Hello people in Mapleprimes,

#After

restart;interface(typesetting=extended);

diff(f(x),x);

#shows f'(x).

#But,

diff(f(t1),t1);

#shows just df(t1)/dt1, not f'(t).

#Can't I show f'(t1) not df(t1)/dt1?

#Is this a way peculiar to Maple?

#I hope someone could give me some hints.

#Best wishes.

#taro

Hello,

I would like to know how one would add a superscript in maple? For example, I need to label an axis with unit cm^-1 but it shows 1/cm (like a fraction) when executed. How could I avoid this so the graph label would output cm^-1? Thank you for your help in advance!

Gambia Man

Please how do I type accents in code edit region of maple 2015.1 (for instance putting "Hat over" on alpha)?

Thank you.

hello every one.please help me with solving this equations.i can not solve this and i need it.thanks

eq1 := (cos(beta2)-1)*w11-sin(beta2)*w12+(cos(alpha2)-1)*z11-sin(alpha2)*z12-cos(delta2) = 0; eq2 := (cos(beta2)-1)*w12+sin(beta2)*w11+(cos(alpha2)-1)*z12+sin(alpha2)*z11-2*sin(delta2) = 0; eq3 := (cos(beta3)-1)*w11-sin(beta3)*w12+(cos(alpha3)-1)*z11-sin(alpha3)*z12-3*cos(delta3) = 0; eq4 := (cos(beta3)-1)*w12+sin(beta3)*w11+(cos(alpha3)-1)*z12+sin(alpha3)*z11-4*sin(delta3) = 0; eq5 := (cos(beta4)-1)*w11-sin(beta4)*w12+(cos(alpha4)-1)*z11-sin(alpha4)*z12-5*cos(delta4) = 0; eq6 := (cos(beta4)-1)*w12+sin(beta4)*w11+(cos(alpha4)-1)*z12+sin(alpha4)*z11-6*sin(delta4) = 0; eq7 := (cos(beta5)-1)*w11-sin(beta5)*w12+(cos(alpha5)-1)*z11-sin(alpha5)*z12-7*cos(delta5) = 0; eq8 := (cos(beta5)-1)*w12+sin(beta5)*w11+(cos(alpha5)-1)*z12+sin(alpha5)*z11-8*sin(delta5) = 0; alpha2 := -20; alpha3 := -45; alpha4 := -75; alpha5 := -90; delta2 := 15.5; delta3 := -15.9829; delta4 := -13.6018; delta5 := -16.7388; P21 = .5217; P31 = 1.3421; P41 = 2.3116; P51 = 3.1780;

diff_first.mws

Hi,

   If I have a fraction like this w^2/(w^4+2*w^2+1) , how can I make it presented in Maple as  '1/(w^2+1/w^2+2)' (Both numerator and denominator divided by w^2) ?

Thanks in advance!

When using units, then e.g. "2 m" is show as expected below, but "1 m" shown as only "m".  Even through correct, it is a non-standard way to write physical values.

How to get the physical values in a format of "{numerical} {unit}" even when the numerical part is 1?

In a simple example below I try to write an equation with an unknown value present among other values that have unit, but I get an error since the unknown value d does not have a unit yet.

How to write such expressions, e.g. for use in solve later?

In the code below the new function g is defined based on existing function f, but the new function g is then dependent on f at the time of definition, which is shown since later changes to f will change value of g.

How to fix definition of g based on f at the when g is defined, so later changes of f does not alter g ?

Hello every one,please help me for plotting this equation(T).L=1,t=10,a=0.1,x=0..1

hi

maple with collocation and galerkin methods

please help me with writing the cods