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MW_1072788610-Marble
10-Marble
Jul 5, 2023 8:45 AM UTC
Solved

Finding the current equation, using system of equation - Mathcad 9.0

MW_10727886_0-1688546369947.png

Hi
I am using Mathcad 9.0. I want to find the current I1 and put the value into the second equation so that I can represent the equation in I=U/Z from. But I can do it manually and not in Mathcad. 

I have attached my mathcad file as well as the picture, how I want to express my model.

Please provide your valuable time!

Regards,
Waqas

 

 

 

 

ttokoro
ttokoroAnswer
21-Topaz I
Jul 6, 2023 10:45 AM UTC

image.pngimage.pngimage.png

t.t.
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15 replies

ttokoro
ttokoro21-Topaz I
21-Topaz I
Jul 6, 2023 4:50 AM UTC

R1*I1 and R2*I2, * is required.image.png

 

image.pngimage.pngimage.png

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t.t.
MW_1072788610-MarbleAuthor
10-Marble
Jul 6, 2023 6:29 AM UTC

Thanks for looking into it. I have rectified the error.

I have solved my problem manually, but I want to solve it using Mathcad. I have attached the picture of my manual calculation. The file is named as "a.jpg".  I want to get a simplified value of I1 in the form of I1=U/Z. just like in the picture I have inserted along with the message.

Best,
Waqas

MW_10727886_0-1688624963522.png

 

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Werner_E
Werner_E25-Diamond I
25-Diamond I
Jul 6, 2023 4:52 AM UTC

You have to type 1j (or 1i) for the imaginary unit - without any space or multiplication in between!

Unfortunately unlike in good old real Mathcad, the leading "1" is not suppressed when displaying the result.

You can set the math formatting for the whole sheet to display 1j instead of 1i,  but the symbolics isn't integrated good enough in Prime and it ignores that setting and always shows just 1i.

You may define j:=1j at the top of the sheet so you can simply type j instead of 1j, but when evaluating expression symbolically you still will see 1i

 

Furthermore you have to place a multiplication character between R1 and I1 and also between R2 and I2. Either an explicit one (*)or and implicit one (Ctrl-U).

 

Werner_E_0-1688619152722.png

 

 

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    MW_1072788610-MarbleAuthor
    10-Marble
    Jul 6, 2023 6:31 AM UTC

    Dear Werner,

    Thanks for looking into it. I have rectified the error.

    I have solved my problem manually, but I want to solve it using Mathcad. I have attached the picture of my manual calculation. The file is named as "a.jpg".  I want to get a simplified value of I1 in the form of I1=U/Z. just like in the picture I have inserted along with the message.

    Best,
    Waqas


    MW_10727886_1-1688625021582.png

    MW_10727886_2-1688625089643.png

     

     

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    Werner_E
    Werner_E25-Diamond I
    25-Diamond I
    Jul 6, 2023 7:30 AM UTC

    Not sure that I understand.,

    If you "simplify"/expand your manually derived result, don't you get the same expression for I2 as Prime does?

    Werner_E_0-1688628602504.png

     

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