Hi
You can find an easy relation between and that will let you find the general expression of with respect to n
Find the general term , or nth term , u_n .
-4 , 8 , -14 , 22 , -32
i can see te pattern ..
4 = 4
8 = 4 + (2x2)
14 = 4 + (2x2) + (2x3)
22 = 4 + (2x2) + (2x3) + (2x4)
32 = 4 + (2x2) + (2x3) + (2x4) + (2x5)
But i cant do the induction ??
i am really weak at questions like this ..