Question

the n th term of an ap is 2n-3 find the common difference

Answer 1

an=2n-3

a=2×1-3=-1

a2=2×2-3=1

d=a2-a1=1-(-1)=1+1=2

therefore common difference is 2

Answer 2

Answer:

an=2n-3

a1=-1

a2=1

d=a2-a1

d=1+1

d=2

Step-by-step explanation: