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Geometric Progression - 4
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Geometric progression - 4

Bharat Gupta is teaching live on Unacademy Plus

Bharat Gupta
Engineer by degree Mathematician by Heart. Having 22 years of teaching experience. Visit my youtube channel BHARAT GUPTA-RADIX .

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ആർച്ചി ഷില്ലർ india australia ക്രിക്കറ്റിലും പങ്കെടുത്തില്ലേ ?
Yes 👍👍
x=0 is the only value which satisfies the condition. So, we have 1 real value for x. Why did so many people post the wrong answer??
But there's a print error in question 2. It should be (4x+1)^2 = (2x+1)(8x+1)
0 is the answer of second question
In second question answer should be zero
sir answer will be 0 in the case of 2nd question
sir at 7:00, after putting the correct value of f(4x) , I get ans option a.) 0 sir kindly cross check it once whether I get correct and or not thanks in advance
Priya Pradhan
6 months ago
No the answer will be ( b). 1 because we have only one real value i.e 0.
  1. SEQUENCE AND SERIES Class -(9 (Geometric Proqression)


  2. nth term of an Geometric Progression 2 a n-l Sum of n term of an Geometric Progression


  3. Sum of infinite term of an Geometric Progression =


  4. If r > 1 and x a . . oo r T z=c+-+-+-.. oo, then the value of V bc (a) ab (d) None of these If f(x) 2x +1, then the number of real values of x for which the three unequal numbers f(x), f(2x) and f(4x) are in G.P. is a.0 b.1 C. 2 d. none of these. If x, 2x 2, 3x +3, a. 27 are in G.P., then the fourth term is d. 13.5 b.-27 c. 13.5 The sum of three numbers in GP is 70. If the two extreme terms are multiplied by 4 and the middle term by 5, the resulting number are in A.P. Find the numbers. a. 10, 25, 35 b. 10, 20, 40 c. 15, 30, 35 d. 12, 24, 34


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  6. If r> 1 and x -at+ g+.o y=b-r+1 2 + so, then the value of ab ac bc (d) None of these


  7. If r > 1 and x=a+-+-2 + y=b-r+1 2 + oo, so, then the value of ab (a) A (b) aC (c) be (d) None of these N , 1-1 ab


  8. If f(x) 2x + 1, then the number of real values of x for which t x), f(2x) and f(4x) are in G.P. is a. 0 he three unequal numbers f b. 1 c. 2 d. none of these.


  9. If f(x) = 2x + 1, then the number of real values of x for which t x), f(2x) and f(4x) are in G.P. is a. 0 he three unequal numbers f b. 1 c. 2 d. none of these. 2 om)


  10. If x, 2x + 2, 3x + 3, term is a. 27 are in G.P., then the fourth b. 27 c. 13.5 d. - 13.5


  11. The sum of three numbers in GP is 70. If the two extreme terms are multiplied by 4 and the middle term by 5, the resulting number are in . . Find the numbers. a. 10, 25, 35 b. 10, 20, 40 c. 15, 30, 35 d. 12, 24, 34


  12. The sum of three numbers in GP is 70. If the two extreme terms are multiplied by 4 and the middle term by 5, the resulting number are in A.P. Find the numbers. a. 10, 25, 35 b. 10, 20, 40 c. 15, 30, 35 d. 12, 24, 34 of alno 1 2.