## 1097 Reputation

12 years, 98 days

## Is the for..do loop in my procedure caus...

Maple 2018

I trying to get a proc to work. In the 1st half of the document, I derive four sections for a pedal curve and plot them fine. In the second I try doing it with a procedure called Pedal. Am having problems. I think it might be something to do with the for.. do loop.

 (1)

 (2)

 (3)

 (4)

 (5)

 (6)

 (7)

This I can't get to work. All 4 sections of the pedal curve are the same and should not be.

 (8)

 (9)

## Implicitplot empty, Why?...

Maple 2018

Why does the implicit plot return empty?

```plots:-implicitplot((x^2+y^2 = 1)^2, x = -3 .. 3, y = -3 .. 3);# plots
plots:-implicitplot((x^2+y^2-1)^2, x = -3 .. 3, y = -3 .. 3) # empty plot```

## Assume and Signum problem...

Maple 2018

I have assumed lambda <-1 yet signum(lambda) returns lambda~.  It should be -1. I need to show that the expression lambda is used in is negative.

 Originally lambda, renamed lambda~:   Involved in the following expressions with properties     -real+lambda assumed `property/object`[0]     lambda+mu+nu assumed `property/object`[1]   also used in the following assumed objects   [-real+lambda] assumed 0   [lambda+mu+nu] assumed 1

 (1)

 Originally lambda, renamed lambda~:   Involved in the following expressions with properties     -real+lambda assumed `property/object`[0]     lambda+mu+nu assumed `property/object`[1]   is assumed to be: RealRange(-infinity,-1)   also used in the following assumed objects   [-real+lambda] assumed 0   [lambda+mu+nu] assumed 1

 (2)

 (3)

 (4)

## Simplify What assumptions to treat a,b a...

Maple 2018
`A := (a^6)^(1/3)*(-b^3)^(1/3)/a^3`

I Can't get this to simplify to -b/a.

## How to get procedure to handle f or f(x,...

Maple 2018

I have a procedure to truncate algebraic equations. Found the basic answer hrere. I would like to make it handle equations and functions i.e f:=a x^2 +b y... and f(x,y):=c x y^2.... I can make it handle the first type but not the second.

 (1)

 (2)

 (3)

 (4)

 (5)

 (6)

 (7)

 (8)