solve for x:
|5x+a|<=|2x| where a>0
That's a less than equal to sign, can't find the button here for it, sorry!
I did:
5x+a<= 2x
x<= -a/3
-5-a>= 2x
x<= -a/7
But the answer is wrong!
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123PC
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- 20-01-2016 15:13
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- 20-01-2016 15:16
(Original post by 123PC)
solve for x:
|5x+a|<=|2x| where a>0
That's a less than equal to sign, can't find the button here for it, sorry!
I did:
5x+a<= 2x
x<= -a/3
-5-a>= 2x
x<= -a/7
But the answer is wrong! -
123PC
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- 20-01-2016 15:26
(Original post by TeeEm)
I will start by sketching the 2 graphs
The answer worked out when I sketched the graphs. -
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- 20-01-2016 15:28
(Original post by 123PC)
But can it be done algebraically, with out graphs?
The answer worked out when I sketched the graphs. -
123PC
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- 20-01-2016 15:31
(Original post by TeeEm)
It can but this is way too advanced and messy, so it is not worth it -
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- 20-01-2016 15:31
(Original post by 123PC)
Okay, thank you!
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