Let 
If 
exists then find the value of a.
Left Hand Limit(L.H.L.):
= 4 (2) – 5
= 8 – 5
= 3
Right Hand Limit(R.H.L.):
= 2 – a
Since 
it exists,
→ 3 = 2 – a
→ a = 2 – 3
→ a = -1
1
Let
If exists then find the value of a.
Left Hand Limit(L.H.L.):
= 4 (2) – 5
= 8 – 5
= 3
Right Hand Limit(R.H.L.):
= 2 – a
Since it exists,
→ 3 = 2 – a
→ a = 2 – 3
→ a = -1