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If f(x)={{:(1" if "x le 3),(ax+b" if "3 ...

If `f(x)={{:(1" if "x le 3),(ax+b" if "3 lt x lt 5),(7" if "x ge 5):}`
Find a and b, so that f(x) is a continuous function.

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The correct Answer is:
`a=3, b= -8`
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