chalte chalte solve som qns.

1)a series f +ve nos is such that a₁=4 and a_n+1=a_n+ 4/a_n n>0.then [a₁₀₀]=
(where [] represents greatest integer function)
a.28
b.29
c.30
d.31

2)wht can be said abt the planes

2x-4y+2z=5
5x-y-z=8
x+y-z=7.........(multiple answer)

a.their intrsection is a triangular prism
b.their intrsection is a point
c.each plane is parallel to x=y/2=z/3
d.each plane passes through x=y/2=z/3

3)let a,b,c be three vectors such that they hav same mag.
if |a-b|²+|b-c|²+|c-a|²=27
then
a. a,b,c are coplanar
b. a,b,c represent orthogonal triad of vectors
c. a,b,c represents sides of a triangle (atleast in magnitude and direction)
d.the value of a.b+b.c+c.a is minimum in this case

(assume proper notation for vectors...:D)

4)