Speed is always positive or zero but never be _________.

Siamese twins are always either male or female and never be male and female. a. Why are the twins called Siamese twins? b. What do you mean by identical twins? c. What are fraternal twins?

If x ,y ,a n dz are real and different and u=x^2+4y^2+9z^2-6y z-3z x-2x y ,t h e nu is always a. non-negative b. zero c. non-positive d. none of these

If U_(n)=int_(0)^(pi)(1-cosnx)/(1-cosx)dx where n is positive integer of zero, then The value of U_(n) is

Distance covered by a particle never becomes zero but displacement becomes zero.

If the y - coordinate of a point is zero, then the point always lies______.

Let fa n dg be increasing and decreasing functions, respectively, from [0,oo]to[0,oo]dot Let h(x)=f(g(x))dot If h(0)=0, then h(x)-h(1) is always zero (b) always negative always positive (d) strictly increasing none of these

Lungs do not collapse between breaths and some air always remains in the lungs which can never be expelled became: