[" Show that "a_(1),a_(2),...,a_(n),..." form an AP where "a_(n)" is defined as below: "],[[" (i) "a_(n)=3+4n," (ii) "a_(n)=9-5n]]

Show that a_(1),a_(2)"……"a_(n),"……." form an A.P. where a_(n) is defined as below : a_(n)=9-5n

Show that a_(1),a_(2)"……"a_(n),"……." form an A.P. where a_(n) is defined as below : a_(n)=3+4n

Show that a_(1), a_(2), ….,a_(n),… form an A.P where an is defined as below : (i) a_(n) = 3 + 4n (ii) a_(n) = 9 - 5n . Also find the sum of the first 15 terms in each case.

Show that a_(1),a_(2),......a_(n),.... from an AP where a_n is defined as below: (1)a_(n)=3+4n(2)a_(n)=9-5n Also find the sum of the first 15 terms in each case.

Show that a_(1), a_(2), …….., a_(n)….. form an AP where a_(n) is defined as below: (i) a_(n) = 3 + 4n . Also find the sum of the first 15 terms in each case.

If a_(n)=3-4n , then show that a_(1),a_(2),a_(3), … form an AP. Also, find S_(20) .

If a_(n)=3-4n , then show that a_(1),a_(2),a_(3), … form an AP. Also, find S_(20) .

a_(n) = 9-5n, a_(4) = ………….