Question

x:x belongs to R and x^4=-1 find no. of elements​

Answer 1

Step-by-step explanation:

Let A be x:x € R x⁴=-1

if

x=0. 0⁴= -1. 0 isn't equal to -1

x=-1. ( -1)⁴ = -1. -1 isn't equal to-1

no element gives its ⁴ is -1.

so A ={ } null set

Answer 2

I'm from phy wallah you-tube batch