taro

505 Reputation

12 Badges

11 years, 86 days
Maple is to me difficult. The first version I bought was Maple9, and it was more than 15 years ago. But, I couldn't use it, feeling it too difficult. But, three years ago, I thought Maple might be helpful to my study, and since then, I have continued to learn Maple. As I got able to read the Maple help, I think that I could get to use maple better now than before. But, I feel that I am a beginner yet.

MaplePrimes Activity


These are questions asked by taro

Hello those who attends Mapleprimes,

 

I have a question.

A programme was written in a text:

 

n:=5

if n=0 then

0

elif n=1 then

 1/2

elif n=2 then

  sqrt(2)/2

elif n=3 then

  sqrt(3)/2

else error "bad argument: \%1", n;

end if; 

 

The answer of this programme was 

 error bad argument.

 

What I couldn't understand was the meaning of \%1

Could you tell me about it to me?

 

Thanks in advance.

taro

Dear people in mapleprimes,

 

I have a question which is probably very elementary.

> integers:=[10..15]:
> select(isprime, integers);
Then, "Error, selecting function must return true or false" appears.

On the other hand, 

> integers:=[$10..15]:
> select(isprime, integers);

Then , [11, 13] appears.

 

What role does the character "$" play here? 

 Thank you in advance.

 

taro

Please tell me how to do about the following problem to me.

 

g:=(b*y)^k*k*y;

simplify(%);

Then, what I obtained was (b*y)^k*k*y, not (b^k)*k*y^(k+1).

expand of the command brought the same answer not (b^k)*k*y^(k+1).

Please tell me what was wrong to my calculation.

 

Thank you in advance.

 

Taro.

 

I can't simplify the expression of 

(1/a[x])^(-k-1+epsilon)/(1/a[I])^(-k-1+epsilon)

to 

(a[x]/a[I])^(k+1-epsilon);

 

Please tell me how to do this.

 

Thank you in advance.

 

Taro yamada

I want to taylor-expand cos(x) to the powers of two, four, and six, then to make equations which does not contain O(x^2) etc. and to obtain its value at x=0.1.

For that, I wrote as the following.
(1):
a:=seq(taylor(cos(x),x=0,i),i=[2,4,6]);
convert(a),polynom);

(2):
a:=seq(taylor(cos(x),x=0,i),i=[2,4,6]);
seq(convert(op(i,a),polynom),i=[2,4,6]);

(3):
a:=seq(taylor(cos(x),x=0,i),i=[2,4,6]):
convert(a,polynom);

All of the above were not good.

On earth, I couldn't pick up each of the result of
a:=seq(taylor(cos(x),x=0,i),i=[2,4,6])
with op(1,a).

How can I solve this problem?

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