Question

Evaluate the summation of negative 5 n minus 1, from n equals 3 to 12..

Answer 1

\[\sum_{n=3}^{12}-5n-1\]

Answer 2

Integrate the function -5x-1

Answer 3

How do you do that?

Answer 4

Go and check out the basic rules of integration. You need to know them well before you do this question.

Answer 5

\[\int\limits_{?}^{?}x ^{n} dx = \frac{ x^n+1 }{ n+1 }\]

Answer 6

if you have not studied integration
you can do it like this

-5(3)-1 =
-5(4)-1 =
-5(5)-1 =
-5(6)-1 =
-5(7)-1 =
-5(8)-1 =
-5(9)-1 =
-5(10)-1 =
-5(11)-1 =
-5(12)-1 =

then add up all of these--- integration is faster and easier