Question

what is the value of sigma n²=​

Answer 1

Answer:

The series \sum\limits_{k=1}^n k^a = 1^a + 2^a + 3^a + \cdots + n^a

k=1

∑

n

k

a

=1

a

+2

a

+3

a

+⋯+n

a

gives the sum of the a^\text{th}a

th

powers of the first nn positive numbers, where aa and nn are positive integers. Each of these series can be calculated through a closed-form formula. The case a=1,n=100a=1,n=100 is famously said to have been solved by Gauss as a young schoolboy: given the tedious task of adding the first 100100 positive integers, Gauss quickly used a formula to calculate the sum of 5050.5050.

Answer 2

Answer:

can be 0 or 1

because square of a number can be zero or positive

by above statement

replacing n by 0 or positive

so signum n^2= signum 0=0

or signum of positive number = 1

Step-by-step explanation: