which of the following cannot be the general term of the Ap and why? 4n+3,3n^2+5,2n-4/5
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Answered by
3
3n²+5 cannot be the general term of the A.P becauce general term of the A.P cannot be quadratic
PROOF:
lets take 4n+3
then the sequence is 7,11,15,...
11-7=15-11
3=3
hence , it is an A.P
BUT,when we take 3n²+5
the sequence is 8,17,32,...
17-8≠32-17
9≠15
hence it is not an A.P
PROOF:
lets take 4n+3
then the sequence is 7,11,15,...
11-7=15-11
3=3
hence , it is an A.P
BUT,when we take 3n²+5
the sequence is 8,17,32,...
17-8≠32-17
9≠15
hence it is not an A.P
Answered by
2
it is not an A.P.......
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