1) The number of real roots of the equation (x - 1)2 + (x - 2)2 + (x - 3)2 = 0 is
A 2
B 1
C 0
D 3
2) Doubt : what is cis (Complex Numbers)
3) Doubt : Give me the exact formula of shortest distance
4) Let y = (sin-1 x)3 + (cos-1)3 x then.
A. min y = Π3/8
B. min y = Π3/32
C. min y = 7Π3/8
D. min y = 7Π3/32
5) Tips how can i stove a problem in few seconds.
6) The value of sin(2sin-1 (0.8)) is equal to
A sin 1.2o
B. sin 1.6o
C. 4.48
D. 0.96