Archive
3rd of March 2017
Mathematics
Q:

solve for x if |x|+x=2+i

Nikita19malhotra - CBSE - Class XI Science

Thursday, March 02, 2017 at 19:46:PM

A:

begin mathsize 16px style open vertical bar straight x close vertical bar plus straight x equals 2 plus straight i
Case space 1 colon space For space straight x greater than 0 comma space we space get
rightwards double arrow straight x plus straight x equals 2 plus straight i
rightwards double arrow 2 straight x equals 2 plus straight i
rightwards double arrow straight x equals fraction numerator 2 plus straight i over denominator 2 end fraction
Case space 2 colon space For space straight x less than 0 comma
rightwards double arrow negative straight x plus straight x equals 2 plus straight i
This space is space absurd.
So comma space as space per space case space 1 comma space straight x equals fraction numerator 2 plus straight i over denominator 2 end fraction space which space is space straight a space complex space solution. end style

Friday, March 03, 2017 at 17:49:PM