A. x€ R
B. x € R-(-3/2,2/3)
D. x €(-3/2,2/3)
If x=1+2a+3a2+4a2+……( -1 < a < 1 ) and y=1+3b+6b2+10b3+……( -1 < b < 1 )then find 1+ab+(ab)2+(ab)3+….. in terms of x and y.
The cost of 8 Sharpeners and 12 Pens is Rs. 76/- What is the cost of 20 Sharpeners and 30 Pens?
If n(x) = x2 - 10x, then n(-10) =
Let x and y be consecutive integers. Suppose m be the number of solutions of x3 − y3 = 3k2 and n be the number of solutions of x3 − y3 = 2t2,where k, t are integers. Then m + n equals:
If (x + 4) (x + 6) (x +1) 2> 0, then the solution set for the inequality is
If 5x + 9 > 3x + 19, what is the range of values x can take?
The g.c.d. of x3 + x2 – x – 1 and x2 – 1 is
The total number of integer pairs (x, y) satisfying the equation x + y = xy is
If a, b and c are the sides of a triangle and a4 + b4 + 2a2b2 = c4, then the triangle is
Which of the following is true?