7804baaa-ebc1-4d52-b756-fac737ad5aa3 8 4 5 decimal

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Example - Substitution:

eq2 1 el 0 F1x Fgx - Fr1 - ≡ (:

eq2 2 el 0 Fn1 F1y - Fgy - ≡ (:

eq2 3 el Fr1 μ Fn1 * ≡ (:

step1 eq2 1 el eq2 3 el at (:

I cant make it work!!?? But its working on the small example below.

step1 step1

step2 step1 eq2 2 el at : step1

small example for me to learn... ;-)

e 1 el x 2 y * 3 z * + ≡ (:

e 2 el y 2 w * ≡ (:

e 3 el w a ≡ (:

e 1 el x 2 y * 3 z * + (≡

st1 e 1 el y 2 w * ≡ at (:

st2 e 1 el e 2 el at (:

st1 x 4 w * 3 z * + (≡

st2 x 4 w * 3 z * + (≡

Seems to work ;-)

st3 st2 e 3 el at (:

I try to substitute e_3 into st2

st3 x 4 a * 3 z * + (≡

sol st3 a Solve (: a x - 3 z * + 4 / - (≡

now i rearange the formula for a=...

sol a x - 3 z * + 4 / - (≡

Put values in the solution:

x 1 :

z 3 :

sol #

Is there a way to calculate the value of a?

a # :