## Why is Maple not accepting A=B=C?...

When I put "print(A=B=C);" in Maple 13 I get the error:

Error, `=` unexpected

about the second equality sign. How do I remedy that?
Thanks!

mapleatha

## Why is Maple reversing the order of lamda and I in...

I input print(lambda*I) and I get I*lambda (Greek lambda symbol); Why is the order reversed?
Maple 13 (GUI) is doing it.
Thanks!

mapleatha

## Can we get rid of the parentheses in exp(2*t) in M...

The expression exp(2*t) gives us the number e^(2t). Can we get rid of the parentheses around 2t?
Thank you!

mapleatha

## how can I plot an expression involving and imagina...

I wand to plot the following expression involving an imaginary number. Can I get some help??

((1/10)*exp((2/135)*sqrt(-11)*sqrt(225)*t-(2/3*I)*x+1/15)/((3/10)*exp((2/135)*sqrt(-11)*sqrt(225)*t-(2/3*I)*x+1/5)

## Convert to explicit first order...

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In this link i attache the code , which is working on this Download Three_euqtions.mw and i got an error which is i couldnot understand. So, kindly can you help on this ??

## a look at recursive functions

Maple 13

Hi MaplePrimes,

another_recursive_sequence.mw

another_recursive_sequence.pdf

These two files have the same content.  One is a .pdf and the other is a Maple Worksheet.  I explore integer sequences of the form -

a(r) = c*a(r-1)+d*a(r-2) with a(1) and a(2) given.

Some of these sequences are in (the Online Encyclopedia of Integer Sequences) OEIS.org and some are not.  If we restrict c to 1 and assume that a(1)=1 and a(2) = 2 we have the parameter d remaining.  See additional webpage -

Let me know if you like the code.

Regards,

Matt

## What method is implemented in the procedure int wi...

What method is implemented in the procedure int with option numeric? Does the method depend on the integrand? Where can I find this information?

## solving system of partial differential equations n...

I am trying to solve the particular system of partial differential equation. But I get the following error.pdsolve.mw

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## rsolve for recursive equation...

HI MaplePrimes,

The input -

rsolve(f(n)=f(n-1)+10*f(n-2),f(k))

returns a large expression.

My had calculations reduce this to

f(k) = [(41-19*sqrt(41))/820]*[((1-sqrt(41))/2)^k+((1+sqrt(41))/2)^k)].

There may be an error.

We let f(1)=1 and f(2)=2.

The sequence, starting with 1 should read -

1,2,12,32,152,472,...

What is the correct expression for f(k)?

Regards,

Matt

## How does one code a recursive sequence that depend...

Hi Mapleprimes people and robots,

My question is regarding a recursive sequence.  It can be defined non-recursively as -

a(r) :=  0.8*3^r + 0.2*(-2)^r.

The first few terms are -

1,2,8,20,68,188, and so on.

Here is my Maple Worksheet.
recursive_sequence_A133467.mw      recursive_sequence_A133467.pdf

I want some Maple code that will produce 30 terms of this sequence.  It is defined as

s[1]:=1:
s[2]:=2:

for n>2 we let s[n] = s[n-1] + 6*s[n-2].

Let me know if my question does not make sense.

Regards,
Matt

## an obscure sequence...

HI experts,

fibonacci_sequence_with_coefficient.pdf

Is there a Last name associated with a double 'hailstone problem' with variable integer coefficients?

Just curious.

Regards,

Matt

## solving a multivariable function...

I am trying to solve system consisting of two equations and two unknowns. I tried solve but it gives back unevaluated then I tried fsolve which gives an error.

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## boundary conditions...

the program shows that the error please verify it sirprogram11.mw

## Maple giving back double integral unevaluated...

I am trying to evaluate the following double integral where hypergeom([x,1/2],[3/2],C) is gauss hypergeometric function 2f1. maple gives back it unevaluated. I doubt it may be due to slow convergence of hypergeometric function.

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## Evaluating a triple integral...

I am trying to evaluate the following triple integral but it takes much time so i kill the job.

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