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Find the values of `a` so that the function `f(x)={a x+5,\ \ \ if\ xlt=2x-1,\ \ \ if\ x >2` is continuous at `x=2` .

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Given:

`f(x)= a x+5, text { if } x leq 2 x-1, text { if } x>2`

We observe

`({LHL}` at `x=2)=` ...
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