" (i) "{x:x in Z,x^(2)=4}

Are these sets equals? A={x:x in Z and x^(2)<=4}B={x:x in R and x^(2)-3x+2=0}

Are sets A= {-2,2},B={x:x in Z ,x^2 -4 =0} equal ?Why?

{x :x in Z " and "x^(2) le 4}

Let f(x)={(x^2,x in Z),((k(x^2-4))/(2-x),x notinZ):} Then, lim_(xrarr2) f(x)

Let f(x)={(x^2,x notin Z),((k(x^2-4))/(2-x),x notinZ):} Then, lim_(xto2) f(x)

Let A={x : x in Z, 2 le x le 5} and B={x : x in Z, -2 le x lt 4} . Find the following : (i) n(A uu B) (ii) n(A nn B) (iii) n(A-B) (iv) n(B-A)

If A = {x: x in Z and x ge 2} , B= {x: x in Z and x le 4} , then A cap B is equal to:

"if " sin^(-1) x +sin ^(-1) y+sin ^(-1) z=pi show that , x^(4)+y^(4)+z^(4)+4x^(2)y^(2)z^(2)=2(x^(2)y^(2)+y^(2)z^(2)+z^(2)x^(2))

For A={x : x in Z, -2 lt x le 4}. B={x : x in W, x le 5}, C={-4,-1,0,2,3,4} " verify "A cup (B nn C) =(A cup B) nn (A cup C) .