Home
Class 9
MATHS
If G.M. of a and b is (a^(n+1)+b^(n+1))/...

If G.M. of a and b is `(a^(n+1)+b^(n+1))/(a^n+b^n)`,then prove that `n=-1/2`.

Promotional Banner

Topper's Solved these Questions

  • PROGRESSION

    KALYANI PUBLICATION|Exercise EXERCISE|249 Videos
  • MATHEMATICAL LOGIC

    KALYANI PUBLICATION|Exercise EXERCISE|290 Videos
  • SYSTEM OF NUMERATION

    KALYANI PUBLICATION|Exercise EXERCISE|101 Videos

Similar Questions

Explore conceptually related problems

If G.M. of a and b is (a^n+b^n)/(a^(n-1)+b^(n-1)) then prove that n=1/2 .

If (a^(n+1)+b^(n+1))/(a^n+b^n) is the A.M. of a and b, then find n.

If A and G be the A.M. and G.M. of two numbers a and b and A:G=m:n ,then prove that- a:b=m+sqrt(m^2-n^2) :m-sqrt(m^2-n^2)

If cos A+sin B=m and Sin A+cos B=n ,then prove that 2sin (A+B)=m^2+n^2-2 .

If a,bgt0 , aneb ,and ngt1 ,where n is an integer,then prove that a^n+b^ngta^(n-1)b+ab^(n-1) .

In an A.P,if a_m=1/n and a_n=1/m then show that a_(nm)=1 .

If (a^n+b^n)/(a^(n-1)+b^(n-1)) is the A.M. of a and b, then find n.

If A and B are two finite sets,then prove that n(A uu B)=n(A)+n(B)-n(AnnB)

If S_1,S_2 and S_3 be the sums of first n term ,of 2 n terms and of 3n terms of a G.P. respectively,then prove that- S_1^2+S_2^2=S_1(S_2+S_3) .

For any two sets A and B prove that n(A-B)=n(A)-n(AnnB) .

KALYANI PUBLICATION-PROGRESSION-EXERCISE
  1. The ratio of A.M. and G.M. of two positive numbers is 5:4. If the diff...

    Text Solution

    |

  2. The difference between the arithmetic mean and geometric mean of two p...

    Text Solution

    |

  3. If G.M. of a and b is (a^(n+1)+b^(n+1))/(a^n+b^n),then prove that n=-1...

    Text Solution

    |

  4. If G.M. of a and b is (a^n+b^n)/(a^(n-1)+b^(n-1)) then prove that n=1/...

    Text Solution

    |

  5. If 'g' be the GM and p and q be the two A.M.'s between two given numb...

    Text Solution

    |

  6. If A be the A.M. of two given numbers and g1 and g2 be two G.M.'s betw...

    Text Solution

    |

  7. a, b, c are in A.P. If x be the G.M. of a and b, and y be the G.M. of ...

    Text Solution

    |

  8. Prove that the product of n G.M.’s between a and b is (ab)^(n/2)

    Text Solution

    |

  9. The A.M. of two positive numbers a and b is twice their G.M. Prove tha...

    Text Solution

    |

  10. If A and G be the A.M. and G.M. of two numbers a and b and A:G=m:n,the...

    Text Solution

    |

  11. Find the sum of the following series 1 + 2 + 4….. to tenth term.

    Text Solution

    |

  12. Find the sum of the following series 1 + 3 + 9….... to tenth term

    Text Solution

    |

  13. Find the sum of the following series 128 + 64 + 32... to tenth term...

    Text Solution

    |

  14. Find the sum of the following series:1-3+9-27+…. to the 9th term.

    Text Solution

    |

  15. Find the sum of the following series:1/sqrt(2)-1+sqrt(2)… to the 10th ...

    Text Solution

    |

  16. Find the sum of the following series 1+1/3+1/3^2….to tenth term.

    Text Solution

    |

  17. Find the sum of the following series:2+1+1/2+1/(2^2)….to the nth term.

    Text Solution

    |

  18. Find the sum of the following series (x+y)/(x-y)+1+(x-y)/(x+y)+…. to...

    Text Solution

    |

  19. Find the sum of the following series (a-x)+(a^2-x^2)+(a^3-x^3)+….. T...

    Text Solution

    |

  20. Find the number of terms if- 1+2+4+….=32767

    Text Solution

    |