Advertisements
Advertisements
प्रश्न
Find the geometric mean between 2a and 8a3
Advertisements
उत्तर
Geometric mean between 2a and 8a3
= `sqrt(2a xx 8a^3)`
= `sqrt(16 xx a^4)`
= 4a2
संबंधित प्रश्न
Find, which of the following sequence from a G.P. :
8, 24, 72, 216, .............
If the first and the third terms of a G.P. are 2 and 8 respectively, find its second term.
Second term of a geometric progression is 6 and its fifth term is 9 times of its third term. Find the geometric progression. Consider that each term of the G.P. is positive.
Q 5
If a, b and c are in A.P, a, x, b are in G.P. whereas b, y and c are also in G.P.
Show that : x2, b2, y2 are in A.P.
Find the sum of G.P. :
1 + 3 + 9 + 27 + .......... to 12 terms.
Find the sum of G.P. :
`1 - 1/2 + 1/4 - 1/8 + ..........` to 9 terms.
Find the geometric mean between `4/9` and `9/4`
Q 3.3
Find the 5th term of the G.P. `5/2, 1, .........`
