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Community Tip - Did you get an answer that solved your problem? Please mark it as an Accepted Solution so others with the same problem can find the answer easily. X

2-Guest

## This value must be a function, but has the form: any1.

Hi there,

I'm having problems with mathcad. I got a assignment in which the attached script was given.

For some reason it doesn't work though.

Any ideas?

1 ACCEPTED SOLUTION

Accepted Solutions
24-Ruby V
(To:Jonirt)

1) you can't write the differential operator d/dt  by hand - you have to use the menu/palette or the keyboard short

2) Your system seems to be setup wrong - there is no solution

5 REPLIES 5
23-Emerald I
(To:Jonirt)

@Jonirt wrote:

Hi there,

I'm having problems with mathcad. I got a assignment in which the attached script was given.

For some reason it doesn't work though.

Any ideas?

Well, I don't have Mathcad 15, when I open this in Smath it looks pretty lame.

Done in Prime 4 Express (so we can't write a solve block to do an odesolve,) see if this helps.

24-Ruby V
(To:Jonirt)

1) you can't write the differential operator d/dt  by hand - you have to use the menu/palette or the keyboard short

2) Your system seems to be setup wrong - there is no solution

2-Guest
(To:Werner_E)
Ah okay,
My instructor never clearly indicated that.
21-Topaz II
(To:Jonirt)

Hi Jonirt,

To learn how to use MATHCAD 15, you should take a look at the tutorial:

24-Ruby V
(To:Jonirt)

Fred showed you your error in setting up the equation and also a nice way to do it without "odesolve".

Here is the correct way to do it in the manner you tried and to other possibilities - all using odesolve (which unfortunately means "no units" in Mathcad 15):

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