Answer:
If un= 3n+2, find u, and u Show that u n+1-Un= 3. 2. (i) If un=n2-3, find u , u ... If un= 3 + n(n-1), show that unti-un= 3n2-n. ... Sn=[a+(n-1)d] + [a + (n - 2)d] +.
Step-by-step explanation:
