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Question

1) limx0[x]x
2) limx1[x]x

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Solution

1) limx0 [x]x
Left hand limit =
=limx(0h) [x]x
=limh0 [0h]0h
=limh0 1h
=limh0 1h
=10
=not define
If L.H.L doesn't exist .
so , limit does not exist.
2) limx1 [x]x
Left hand limit =
=limx(1h) [x]x
=limh0 [1h]1h
=limh0 01h
=limh0 0
=0
Right hand limit =
=limx(1+h) [x]x
=limh0 [1+h]1+h
=limh0 11+h
= 11+0
=1
Right hand limit Left hand limit
so, does no exist.

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