If `y=3^(x-1)+3^(-x-1)` , then the least value of `y` is (a)`2` (b)`6` (c)`2//3` (d)`3//2`

2x+3y=7(a+b)x+y(2a-b)=3(a+b+1) find the value of a+b

If 2^(x+y)=6^(y) and 3^(x-1)=2^(y+1), then the value of (log3-log2)(x-y) is 1(b)log_(2)3-log_(3)2log((3)/(2)) (d) none of these

If 2^(x+y) = 6^(y) and 3^(x-1) = 2^(y+1) , then the value of (log 3 - log 2)//(x-y) is

If x=2+2^(2/3)+2^(1/3), then the value of x^(3)-6x^(2)+6x is (a)3 b.2 c.1 d.-2

If 3^(2x-y)=3^(x+y)=sqrt(27), the value of y is a.(1)/(2) b.(3)/(4) c.(1)/(4) d.(3)/(2)

If sin^(-1)x+sin^(-1)y=(2 pi)/(3) ,then the value of cos^(-1)x+cos^(-1)y is (A) (2 pi)/(3) (B) (pi)/(3) (C) (pi)/(2) (D) pi

If [2x+y4x5x-74x]=[77y-13yx+6] then the value of x+y is x=3,y=1 (b) x=2,y=3(c)x=2,y=4(d)x=3y=3

Let x , y be two variables and x >0, x y=1 , then minimum value of x+y is (a) 1 (b) 2 (c) 2 1/2 (d) 3 1/3

If parabolas y^(2)=lambda x and 25[(x-3)^(2)+(y+2)^(2)]=(3x-4y-2)^(2) are equal,then the value of lambda is 9(b)3(c)7 (d) 6