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Solve MathCad Prime Equation

SOLVED
Regular Member

Solve MathCad Prime Equation

As resol for as equações para encontrar o valor de xEquação.jpg e eu sou novo no mathCad Eu uso o MathCad Prime 5.

1 ACCEPTED SOLUTION

Accepted Solutions

Re: Solve MathCad Prime Equation

 

B.png

 

Furthermore you have to consider that x^2 = 36 has two solution! Not only x=6 but also x=-6.

So you will get four solution pairs.

But as you have squared (which is no equivalence transformation) you may get "solutions" which aren't solution to the original problem and you have to filter out those wrong solutions and only the one pair which Prime came up with from the beginning should be left. As you limit your manual calculation to just three decimals I won't expect too much precision - probably no more than one decimal.

 

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11 REPLIES 11
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Re: Solve MathCad Prime Equation

solve-float.png

Re: Solve MathCad Prime Equation

With the Solve block

solve-float-1.png

Re: Solve MathCad Prime Equation

this same exercise solved in the hand presents different values, see:Equação1.jpgEquação2.jpg

Re: Solve MathCad Prime Equation

this same exercise solved in the hand presents different values, see:

 Equação1.jpgEquação2.jpg

Are these simplifications shown in the example possible in MathCad?
I would take the opportunity, and ask for materials, tutorials on mathcad prime. tks

Re: Solve MathCad Prime Equation

The first error I found:

B.png

Looks like you typed 600*48 instead of 600*18

Re: Solve MathCad Prime Equation

I thank my friend, I changed the numbers

Re: Solve MathCad Prime Equation

I made the calculations in hand, and even then the results do not hit mathcad, which may be happening

 Equação3a.jpgEquação3b.jpgEquação3c.jpg

Re: Solve MathCad Prime Equation

 

B.png

 

Furthermore you have to consider that x^2 = 36 has two solution! Not only x=6 but also x=-6.

So you will get four solution pairs.

But as you have squared (which is no equivalence transformation) you may get "solutions" which aren't solution to the original problem and you have to filter out those wrong solutions and only the one pair which Prime came up with from the beginning should be left. As you limit your manual calculation to just three decimals I won't expect too much precision - probably no more than one decimal.

 

View solution in original post

Re: Solve MathCad Prime Equation

Thanks a lot for the friend's explanation, and I would like to ask for some indication about subject books and tutorials. Tks