Home
Class 12
MATHS
The equation (log)(x^2)\ 16 + (log)(2x)6...

The equation `(log)_(x^2)\ 16` + `(log)_(2x)64=3\ h a s` one irrational solution (b) no prime solution two real solutions (d) no integral solution

A

one irrational solution

B

no prime solution

C

two real solutions

D

no integral solution

Text Solution

Verified by Experts

`L.H.S. =(1)/(log_(2^(4))x^(2))+(1)/(log_(2^(6))2x)=3implies(1)/(1//2log_(2)x)+(1)/(1//6(1+log_(2)x))=3"let"log_(2)x=y`
`implies2/y+(6)/(1+y)=3implies2(1+y)+6y=3y(1+y)implies(y-2)(3y+1)=0impliesy=2ory=-1//3`
`log_(2)x=2impliesx=4andlog_(2)x=(-1)/(3)impliesx=2^(-1//3)"]"`
Promotional Banner

Topper's Solved these Questions

  • TEST PAPERS

    BANSAL|Exercise Physics, SECTION-1 (PART-A)|5 Videos
  • TEST PAPERS

    BANSAL|Exercise Physics, SECTION-1 (PART-A) [COMPREHENSION TYPE]|2 Videos
  • TEST PAPERS

    BANSAL|Exercise Math|15 Videos
  • PROBABILITY

    BANSAL|Exercise All Questions|1 Videos
  • THERMODYNAMICS

    BANSAL|Exercise Match the column|7 Videos

Similar Questions

Explore conceptually related problems

The equation log_(x^(2))16+log_(2x)64=3 has (a) one irrational solution (b) no prime solution two real solutions (d) no integral solution

The equation (log)_(x+1)(x- .5)=(log)_(x-0. 5)(x+1) has (A) two real solutions (B) no prime solution (C) one integral solution (D) no irrational solution

The equation ((log)_8(8/(x^2)))/(((log)_8x^2))=3 has- a. no integral solution b. one natural c. two real solution d. one irrational solution

Find the values of a for which the equation x^(4)+(1-2a)x^(2)+a^(2)-1=0(A) has no real solutions (B) has one real solution (C) has two distinct real solutions (D) has three real solutions(E) has four distinct real solutions

The equation (log)_2(2x^2)+(log)_2xdotx^((log)_x((log)_2x+1))+1/2log4 2(x^4)+2^(-3(log)_(1/2)((log)_2x))=1 has exactly one real solution two real solutions three real solutions (d) no solution

The equation pi^(x)=-2x^(2)+6x-9 has (A) no solution (B) one solution (C) two solutions (D) infinite solutions

The solution of the equation 3^(log[a] x)

The equation sin x=x^2+x+1 has (A) one real solution (B) n real solution (C) more thanone real solution (D) two positive solutons

Equation log_(4)(3-x)+log_(0.25)(3+x)=log_(4)(1-x)+log_(0.25)(2x+1)has only one prime solution two real solutions no real solution (d) none of these

The equation |x+1|^(log)_(("x"+1))(3+2-x^(2))=(x-3)|x| has a. unique solution b. two solutions c. no solution d. more than two solution

BANSAL-TEST PAPERS-MATHS
  1. 10^(logp(logq(logr(x))))=1 and logq(logr(logp(x)))=0 then 'p' equals

    Text Solution

    |

  2. For 0ltalphaltbetalt(pi)/(2),if(sinalpha)/(sinbeta)=(sqrt3)/(2)and (c...

    Text Solution

    |

  3. The equation (log)(x^2)\ 16 + (log)(2x)64=3\ h a s one irrational ...

    Text Solution

    |

  4. If A=sum(r=7)^(2400)log(7)((r+1)/(r))," "B=prod(r=2)^(1023) log(r)(t+...

    Text Solution

    |

  5. If y=log(7-a)(2x^(2)+2x+a3)"is defined"AAx inR, then possible integral...

    Text Solution

    |

  6. Match the following Column I to Column II

    Text Solution

    |

  7. Match the following Column I to Column II

    Text Solution

    |

  8. If (n,theta)=prod(n=1)^(n)((1+tan^(2)(2""^(n)theta))/((1-tan^(2)(2""^(...

    Text Solution

    |

  9. Find the number of integral solution of the equation (log)(sqrt(x))...

    Text Solution

    |

  10. Find the number of integral ordered pairs (x,y) satisfying the equatio...

    Text Solution

    |

  11. If sin beta=sin(2alpha+beta) then find the value of (cotalpha+cot(alph...

    Text Solution

    |

  12. If a = log245 175 and b = log1715 875, then the value of (1-ab)/(a-b) ...

    Text Solution

    |

  13. If P=x+1/x and P(tan alpha)=2, P(tan beta)=2sqrt2, P(cot gamma)=4 wher...

    Text Solution

    |

  14. A die is rolled thrice, find the probability of getting a larger nu...

    Text Solution

    |

  15. The value of Sigma(i=1)^(6) (sin .(2pik)/(7)-i cos .(2pik)/(7))

    Text Solution

    |

  16. Find the eccentricity of an ellipse (x^2)/(a^2)+(y^2)/(b^2)=1 whose la...

    Text Solution

    |

  17. AB is double ordinate of the hyperbola x^2/a^2-y^2/b^2=1 such that Del...

    Text Solution

    |

  18. The curve described parametrically by x = t^2 + t +1, y = t^2 - t + 1 ...

    Text Solution

    |

  19. If A and B are two independent events such that P(A)=(1)/(2) and P(B)=...

    Text Solution

    |

  20. If log sqrt(3)((|z|^(2)-|z|+1)/(2+|z|))gt2, then the locus of z is

    Text Solution

    |