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If the function f(x)= {(5", ...

If the function `f(x)= {(5", " x le 2),(ax+b", "2 ltx le 10 ),(21", " x gt 10 ):}`
continuous ,find the values of a and b

A

`a=2,b=1`

B

`a=-2, b=-1`

C

`a=2, b=-1`

D

`a=-2, b=1`

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The correct Answer is:
A
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