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1. If x,y and z are the pth, qth and rth terms of an AP and also of a GP then, x y-z . y z-x . z x-y is equal to (a) xyz (b) 0 (c) 1 (d) none of these 2. Find the value of x in (-∏,∏) which satisfy the equation 8 (1+ |cos x| + cos^2 x + |cos^3 x| + ...) = 4 3 3. If a,b,c are in GP then the equation ax 2 + bx + c =0 and dx 2 + ex + f have a common root if d/a, e/b and f/c are in (a) AP (b) GP (c) HP (d) none

1. If x,y and z are the pth, qth and rth terms of an AP and also of a GP then,


    xy-z. yz-x. zx-y is equal to


(a) xyz 


(b) 0


(c) 1


(d) none of these


 


2. Find the value of x in (-∏,∏) which satisfy the equation


    8(1+ |cos x| + cos^2 x + |cos^3 x| + ...) = 43


 


3. If a,b,c are in GP then the equation ax2 + bx + c =0 and dx2 + ex + f have a common root if  d/a, e/b and f/c are in


(a) AP


(b) GP


(c) HP


(d) none



Grade:Upto college level

1 Answers

jitender lakhanpal
62 Points
11 years ago

Dear Raghu,

 i am solving the first question  answer is 1

and this is a request that send questions seperately

as it is difficult to upload the solution of more than one question

 

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