Question

sigma(nx/n+1)^n
can you please give me the answer​

Answer 1

$\large \sf \maltese \: \: \: { \underline{ \underline{Question \: : }}}$

• Evaluate the expression sig(nx/n+1)^n

Let's understand the concept,

• As we know sig ( x ) is always 1 or 0 or -1. And is expressed as f( x ) = | x |/x [ it's written 0 only when x = 0 ] .
• Now in this case we have to understand wether (nx/n+1)^n is negative or positive. Then only we can say the Answer.

let's do it!!

$\large \sf \maltese \: \: \: { \underline{ \underline{Solution\: : }}}$

$\bull \: \: \: \: \: \: \sf sig {\bigg( \frac{nx}{n + 1} \bigg)}^{n}$

• Now comes the two aspects of the problem. If n is an even number then (nx/n+1) will be a +ve number and in other hand if n is odd number then it's obvious that (nx/n+1) will be negative number.
• Now, as x is belonging in the set of all real number so x can also be equal 0
• So there are three solutions of this problem 1 & -1 & 0