Evulation problem

[aalali]

Hey guys. I want to solve a question in mathcad, but it gives me an udunderstandable answer. How can i evaluate the answer so it's only numbers. Thanks in advance see attached files.

[Fred_Kohlhepp]

don't post a picture.

Post your Mathcad worksheet

[aalali]

How can i attach a file? It seem not possible.

[Fred_Kohlhepp]

In the upper right corner of a dialog box (when you're responding to or writing a question, the link "use advanced editor" appears. Click that, and "attach" appears on the lower right corner.

Noone can figure out why it's so convoluted

[RichardJ]

You need to solve numerically, not symbolically. Look up solve blocks in the help. If you still can't get the answer you want, please post a worksheet.

[aalali]

I have attached the file.

[AndyWesterman]

Given that it is an assignment (Homework - I don't want to just say - here is the answer) as that will not be helpful for you.

However, I would suggest that:

Step 1.

change the definition for I from I:= to I(x):=

This will make it a function with parameter x that you can use anywhere.

Step 2:

as Richard suggests, delete the symbolic solve and look in the help files for the numeric equivalent, in this case 'find'

the solution should be easier - but if you get stuck at some point - post the new sheet & I'm sure that you will get further pointers

Andy

[Fred_Kohlhepp]

Congratulations! You solved it.

Your attached sheet had a solution, just needed to understand how to read it.