If the nth term of an AP is (5n – 2), find its first term and common difference. Also find its
19th term.
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Given,
an=5n-2
Let,
n=1 so
a1=a=5(1)-2=5-2=3
a2=5(2)-2=10-2=8
d=a2-a1
d=8-3=5
an=5n-2
Let,
n=1 so
a1=a=5(1)-2=5-2=3
a2=5(2)-2=10-2=8
d=a2-a1
d=8-3=5
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