Help

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Re: Help

Beverly Wilson wrote:
> I am having trouble figuring out how to enter an equation in your program.
>  
> Can you show me how to enter: x + y = -2

Select Function|Insert relation in the menu, and enter the equation.

> 2x + y < 4

This is done in the exactly same way.

Best regards
Ivan Johansen

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missing part of the curve

Hello,
please help me!
when I enter the function: 2x-3(x^(2/3)) it only shows me the curve towards 
plus infinity and doesn't even starts from zero towards minus infinity...
what's wrong?
the function is defind for all values of x, and it should draw the left side

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Help

In the equation 2x + y < 4, how do I make the line a dashed line instead of a solid line and how do I put arrow heads
on the ends of the line?

Thank you,
Beverly

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Help

In the equation 2x + y < 4, how do I make the line a dashed line instead of a solid line and how do I put arrow heads
on the ends of the line?

Thank you,
Beverly

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Re: Help

beverlywilson1 <at> verizon.net wrote:
> In the equation 2x + y < 4, how do I make the line a dashed line
> instead of a solid line and how do I put arrow heads on the ends of
> the line?

Unfortunately this is not yet possible with relations. But you can add 
the function f(x)=4-2x by selecting Function|Insert function in the 
menu, and choose a dashed line and arrows as end points.

Best regards
Ivan Johansen

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Re: missing part of the curve

Aviad wrote:
> when I enter the function: 2x-3(x^(2/3)) it only shows me the curve towards 
> plus infinity and doesn't even starts from zero towards minus infinity...
> what's wrong?
> the function is defind for all values of x, and it should draw the left side

First you need Graph 4.3 as I don't think it works on earlier versions. 
Next you have to disable "Calculate with complex numbers" under Settings 
in the Edit|Axes dialog.

Best regards
Ivan Johansen

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excellent!

Thank you very much for your fast reply!
everything's ok now...
perhaps you could explain why this issue happens in most graph generating 
applets.
Thanks again,
Aviad.

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Re: excellent!

Aviad wrote:
> Thank you very much for your fast reply!
> everything's ok now...
> perhaps you could explain why this issue happens in most graph generating 
> applets.

It is because most programs, including Graph, uses floating point 
numbers and not fractional numbers when calculating. This means that 2/3 
will be rounded to the nearest number that can be represented as a 
floating point number, and you can therefore not raise a negative number 
to that power.

Graph 4.3 handles a^(b/c) as a special case, that handles the power 
correctly when b and c are integers. It is actually converted to a 
function call PowDiv(a,b,c), so b/c doesn't gets calculated.

Best regards
Ivan Johansen

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Working in degree measure (and Vista help files)

Is it possible to work in degrees instead of radian measure when graphing trig
functions? I've looked but don't see an option to work in degrees.

Also, I'm not able to open your help files. I'm using Vista and this is a common
problem because Microsoft changed the help file format in Vista. Are you
planning to release an update that will permit using the help files in Vista?

BTW, I think you have some wonderful features in your product.

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