## 148 Reputation

16 years, 230 days

## Solving multiple phase angles for multip...

Maple

Greetings All

I have several equations and each have their own individual frequencies and amplitudes. I would like to sum the equations together and adjust ONLY the individual phases, phase1,phase2, and phase3 to keep the total amplitude value of eq_total under a specific value like 0.8. I know I can normalize the signal or change the vertical offset, but for my purposes I need to have the amplitude controlled by changing/finding the values for just...

## Substituting Periodic Fourier series exp...

Maple
`Substituting Periodic Fourier series expansion equation with standing wave equation`

`Maple formatting cuts off some of the information/question I've included a link to an image of the full questionhttp://dl.dropbox.com/u/6576402/questions/sub_per_fou_series_expansion.jpg and as text file`

## Fibonacci egg shape equation tia sal22...

Maple

Greetings All
I can create/plot an egg shape waveform using the equation
below:

y(x) = sqrt(abs[sin(x)+0.1sin(2x)])

Here's a link to it below/ image of it attached
http://dl.dropbox.com/u/6576402/question2.jpg

However I would like for it to follow the
Fibonacci...

## Calculating a given total using only giv...

Maple

Calculating a given total using only given specific values

Greetings All

I'm trying to figure out a way to calculate a given total
using only given specific values.

Example:
The total given is 46

The numbers I can use are 56,38,20,12,4, and 1

## Finding repeating patterns in strings / ...

Greetings All

I'm trying to find repeating numbers in the golden mean like 618, 619,645 etc..

I'm getting error message because of syntax and the decimal point how do I take the decimal point out so instead the string is 618 instead .618

How do I get rid of the decimal point in a string?

example

p:=evalf((1+sqrt(5))/2-1,20);

ns:=convert(p,string);

seq(Take(p,i),i=0..20)

SearchText(678,p)

tia sal22

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