Question

if 19 A.M's inserted in between 1/4 and -9 3/4 then common difference is​

Answer 1

Answer:

`(2pq)/(a)`

2apq

`2ap^(2)q^(2)`

none of these

Answer

B

Solution

Let x and y be two positive numbers.

Since a is the single A.M. between a and y

`:." "a=(x+y)/(2)`

It is given that p and q are two geometric means between x and y. Then,

x,p,q,y are in G.P. with common ratio r given by `r=(yx)^(1//3)`

`:." "p=xr=x^(2//3)y^(1//3)andq=xr^(2)=x^(1//3)y^(2//3)`

`rArr" "p^(3)+q^(3)=x^(2)y+xy^(2)=xy(x+y)=2axy=2a pq`

Step-by-step explanation:

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Answer 2

Answer:

sorry thodi mistake ho gayi,

2021( sin²+cos²)=2021×1=2021