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Alex_Xolod [135]
3 years ago
11

|18-x|, if x<18. Pls help

Mathematics
1 answer:
damaskus [11]3 years ago
3 0

Answer:

I18 - xI such that x < 18.

ok, first let's what happens if x = 18:

I18 - xI = I18 - 18I = 0

So, at the moment we have the condition:

I18 - xI > 0.

now, if x is a really large negative number, suppose, x = -100

I18 + 100I = I118I = 118

So, as x can freely move in the negative range, we can see that I18 - xI can be any positive number, so the only restriction that we have is:

I18 - xI > 0.

This means that the domain is:

D = (-∞, 18)

and the range is:

R = (0, ∞)

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multiply equation 1 by 7 and equation 2 by -4 and add both equations to get the value of y.

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