mathematical induction problem no.2 sorry for my laziness of not typing it!
Follow Math Help Forum on Facebook and Google+
Originally Posted by afeasfaerw23231233 mathematical induction problem no.2 sorry for my laziness of not typing it! I don't know if this is how you are to do it, but my first thought is that your series: Now consider And the second sum is just a sum of cubes, so And finally: -Dan
Hello, afeasfaerw23231233! Here's another approach . . . Given: . . for all positive integers find the value of: . We have: . . . . . . . . . . . . . . . . . . . Let Let Let Hence: . Therefore: .
thanks. i shouldn't make it as [1x4-2]^3+[2x4-2]^3+...
View Tag Cloud