A. 1/2
B. -(1/50)
C. -(8/25)
D. 27/25
If a,b,c ≠ 0 and belong to the set { 0,1,2,3,................9 then log10[(a+10b+102c)/(10-4a+10-3b+10-2c)] is equal to
If x is real, then the minimum value of [(x2-x+1)/(x2+x+1)], is
x = cos θ, y = sin 5θ ==>(1-x<sup>2</sup>) (d<sup>2</sup>y/dx<sup>2</sup>) - x(dy/dx) =
The solution of x log x (dy/dx)+y=2 log x is
The solution of (x2y3+x2)+(y2x3+y2)dy=0 is
The solution of y2 dx+(3xy-1)dy=0 is
If y=(x<sup>2</sup>-1)<sup>n</sup>, then (x<sup>2</sup>-1)y<sub>n+2</sub>+2xy<sub>n+1</sub>=
The solution of excot y dx+(1-ex)cosec2ydy=0 is
The solution of (x+y+1) dy/dx=1 is
The solution of x cos(y/x)(y dx+x dy)=y sin y/x(x dy – y dx) is