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OpenStudy (anonymous):
which of the following are linear equations in x1, x2, x3? a) x1 + 5x2 - sqrt2x3 = 1 b) x1 +3x2 + x1x3 = 2 c) x1 = -7x2 + 3x3 d) x1^-2 + x2 +8x3 = 5 e) x1^3/5 - 2x2 + x3 = 4 f) pix1 - sqrt2x2 + 1/3x3 = 7^1/3 ans = a) c) f) Please help, I dont understand how to do this
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OpenStudy (anonymous):
A, C and F are correct. Linear means x1, x2 and x3 must be raised to no powers.
OpenStudy (anonymous):
so aslong as their are no exponents its linear?
OpenStudy (anonymous):
Yes.
OpenStudy (anonymous):
is there any way to show my work for this?
OpenStudy (anonymous):
this is how the quesation is structured
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OpenStudy (anonymous):
You can show other equations have exponents and therefore don't qualify as linear.
OpenStudy (anonymous):
ok thank you so much
OpenStudy (anonymous):
Also, one of the has x1*x3, which is also non linear.
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