If `|(x,-2,10),(-2,x,10),(10,-2,x)|=0` then (A) `x=7` (B) `x=-4` (C) `x=-8` (D) `x=0`

If [[x,1]][[1,0],[2,0]]=0 ,then x equals (A) 0 (B) -2 (C) -1 (D) 2

If 8(2x-5)-6(3x-7)=10 , then x=?

If x^(2)+(1)/(x^(2))=102, then x-(1)/(x)=8( b) 10 (c) 12 (d) 13

If f(x),g(x) be twice differentiable functions on [0,2] satisfying f''(x)=g''(x)f'(1)=2g'(1)=4 and f(2)=3g(2)=9 then f(x)-g(x) at x=4 equals (A) 0 (B) 10 (C) 8 (D) 2

If |{:(1,x,x^(2)),(x,x^(2),1),(x^(2),1,x):}| =3 then the value of |{:(x^(3)-1,0,x-x^(4)),(0,x-x^(4),x^(3)-1),(x-x^(4),x^(3)-1,0):}| is

Number of real roots of the equation 2^x=2^(x-1)+2^(x-2)=7^x+7^(x-1)+7^(x-2) is (A) 4 (B) 2 (C) 1 (D) 0

x^(2)+10^(-8)x-10^(-14)=0 How to solve ?

If log_(10)[(1)/(2^(x)+x-1)]=x[log_(10)5-1], then x=4 (b) 3(c)2(d)1

If e^(f(x))=(10+x)/(10-x),x in (-10 ,10)a n df(x)=kf((200 x)/(100+x^2)),t h e nk= (a) 0.5 (b) 0. 6 (c) 0.7 (d) 0.8