the modulus of an integer x is 9, then. a. x=9 only. b.x=-9 only. c.x=+-. d.none of these
Answers
Answered by
46
|x| = 9;
x² = 81;
x = (+-) 9; [ Here (+-) sign represents plus-minus sign]
Answer C.
x² = 81;
x = (+-) 9; [ Here (+-) sign represents plus-minus sign]
Answer C.
saismrutinayak:
ok
but what is modulus
Modulus is function that makes any integer positive despite of their sign.
thanx
Answered by
31
As there is modules, x can be equal to either +9 or -9. We can see the situation while solving quadratic equations and find square roots - we get two answers one positive and one negative.
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