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The value of lim(xrarr7)(x-7)/|x-7|is...

The value of `lim_(xrarr7)(x-7)/|x-7|`is

A

a)0

B

b)1

C

c)-1

D

d)none of these.

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UNITED BOOK HOUSE-MODEL QUESTION PAPERS-SET 13-EXERCISE
  1. The distance between the two straight lines 4x + 3y= 11 and 8x+ 6y = 1...

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  2. If two cricles x^2 + y^2 + 2gx + 2fy = 0 and x^2 +y^2 + 2g'x + 2f'y = ...

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  3. The value of lim(xrarr7)(x-7)/|x-7|is

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  4. If y = x +1/x , then dy/dx = 0 at the point

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  5. Two dice are thrown at a time. The probability that the sum of two num...

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  6. Arithmetic mean of 1, 2, 3,..-..... , 100 (1st 100 positive integers) ...

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  7. If R = {(x, y) : x in N, yin N and 2x + y = 10}. then find R^-1

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  8. Write P = {2, 4, 8, 16, 32, 64} in set builder form.

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  9. Find the viaue of tan 28^@ + tan 17^@ + tan 28^@tan 17^@

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  10. Solve :sin 3theta = cos 3theta (0 < theta < pi)

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  11. Find the amplitude of i/(1-i).

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  12. In how many different ways 4 boys and 3 girls can be sitted in one row...

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  13. Find the middle term of the expansion of (a^2/3+3/a^2)^8

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  14. The sum of the 1st m terms of an AP is n and the sum of the 1st n term...

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  15. The co-ordinate of the vertices of a triangle are (2, -2), (4, 2) and ...

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  16. Find the co-ordinate of that point which divides the line segment join...

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  17. show that lim(nrarr0)(root(3)(n+1)-1)/n=1/3

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  18. If y = x/(x+a),show that x dy/dx = y (1- y)

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  19. A box contains 50 articles of which 4 are defective. One article is ta...

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  20. Find the mean deviation of 36, 72, 46,60, 42, 45, 53. 46, 51, 49.

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