Which of the following is not a convex set? `{(x , y):2x+5y<7}` b. `{(x , y)x^2+y^2lt=4}` c. `{:|x|=5}` d. `{(x , y):3x^2+2y^2lt=6}`

Which of the following pair of graphs intersect? y=x^2-x a and y=1 y=x^2-2x and y=sinx y=x^2-x+1 and y=x-4

Which of the following is equivalent to (3x^3y^4)(-2x^2y^5)^3 ?

Examples :- If x;yin{1;2;3;4} ;then which of the following are function in the given set ? (a) f_1={(x;y):y=(x+1)} (b) f_2={(x;y):y 4 (d) f_4={(x;y):x+y=5}

If 2 < x < 5 and 3 < y < 5 , which of the following best describes x - y ?

If 3x + 2y + 4z = 20, 5x + 7y - 9z = - 10 which of the following can be a set of values of x , y and z ?

The shaed region represents the set C of all points (x, y) such that x^(2)+y^(2)le 1 . The transformation T maps the point (x, y) to the point (2x, 4y). Which of the following shows the mapping of the set C by the transformation T ?

Which of the following sets of real numbers is such that if x is an element of the set and y is an element of the set, then the sum of x and y is an element of the set ? I. The set of negative integers II. The set of rational numbers III. The set of irrational numbers