## 20 Reputation

15 years, 216 days

## But it doesn't run with...

But it doesn't run with matrix  ? :

>>h

h =

[sin(x + y + z - t) + sin(x + y + z + t)]
[                                       ]
[cos(x + y + z - t) + cos(x + y + z + t)]

>> maple('trigsubs',h)
??? Error using ==> sym.maple
Error, (in trigsubs) unknown expression

Help me !

## But it doesn't run with...

But it doesn't run with matrix  ? :

>>h

h =

[sin(x + y + z - t) + sin(x + y + z + t)]
[                                       ]
[cos(x + y + z - t) + cos(x + y + z + t)]

>> maple('trigsubs',h)
??? Error using ==> sym.maple
Error, (in trigsubs) unknown expression

Help me !

## Thanks ! if i want :...

Thanks !

if i want : sin(x+y+z-t )+sin(x+y+z+t ) = 2sin(x+y+z)cos(t) how to do ?

## Thanks ! if i want :...

Thanks !

if i want : sin(x+y+z-t )+sin(x+y+z+t ) = 2sin(x+y+z)cos(t) how to do ?

## Thanks so much ! So, how to...

Thanks so much !

So, how to do this : sin(x+y) + sin(x-y)= 2sin(x)cos(y) ?

## Thanks so much ! So, how to...

Thanks so much !

So, how to do this : sin(x+y) + sin(x-y)= 2sin(x)cos(y) ?

## anyways, thanks :D...

anyways, thanks :D

## anyways, thanks :D...

anyways, thanks :D

## thansk, but i run this...

thansk, but i run this command :

>syms x y

> f=cos(y) sin(x) + cos(x) sin(y)

f =

cos(y) sin(x) + cos(x) sin(y)
>> combine(f)
??? Error using ==> eval
Conversion to double from sym is not possible.

Error in ==> combine at 51
eval(evalStr);

i'm using MAPLE TOOLBOX FOR MATLAB V11.0, run this command in MATLAB window

## thansk, but i run this...

thansk, but i run this command :

>syms x y

> f=cos(y) sin(x) + cos(x) sin(y)

f =

cos(y) sin(x) + cos(x) sin(y)
>> combine(f)
??? Error using ==> eval
Conversion to double from sym is not possible.

Error in ==> combine at 51
eval(evalStr);

i'm using MAPLE TOOLBOX FOR MATLAB V11.0, run this command in MATLAB window

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