an=10_3n proves it is an A.p
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Hi☺️
=> To prove : an = 10 - 3n is an A.P.
⏬⏬
a(n-1) = 10 - 3(n-1)
= 10 - 3n + 3
= 13 - 3n
an - a(n-1)
= 10 - 3n - 10 + 3n - 3
= -3
Hence it is an A.P.
Hope it helps you out✌️
Be Brainly ^_^
✴️GOOD NIGHT✴️
=> To prove : an = 10 - 3n is an A.P.
⏬⏬
a(n-1) = 10 - 3(n-1)
= 10 - 3n + 3
= 13 - 3n
an - a(n-1)
= 10 - 3n - 10 + 3n - 3
= -3
Hence it is an A.P.
Hope it helps you out✌️
Be Brainly ^_^
✴️GOOD NIGHT✴️
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