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The gra'diant of the line perpendicular ...

The gra'diant of the line perpendicular to the line x/7-y/3+1=0is

A

a)7/3

B

b)3/7

C

c)-3/7

D

d)-7/3

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UNITED BOOK HOUSE-MODEL QUESTION PAPERS-SET 15-EXERCISE
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  2. If the arithmetic mean of x and y is (x^n+y^n)/((x^(n-1)+y^(n-1))),the...

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  3. The gra'diant of the line perpendicular to the line x/7-y/3+1=0is

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  4. If the staight line x+ y= c touches the circlc x^2 + y^2= 2, then the ...

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  5. If lim(xrarr0)(tanx-sinx)/x^3=M/Nand M = 3, then the value of N is

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  6. If y=tan^-1((1+x)/(1-x))then dy/dx=

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  7. An unbaised coin is tossed two times, the probability of getting ‘head...

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  8. If the coefficent of variation = 40% and variance = 16, the mean will ...

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  9. If n(X) = 4 and n(Y) = 7, then find the maximum and minimum value of ...

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  10. Given R = {(x, y) : x, yinN and 2x + 3y = 9}.' Find R as sets of order...

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  11. Find the value of tan 20^@ tan 40^@ tan 80^@.

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  12. In /\PQR, angleP = 60^@, show that q + r = (q-p)/2

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  13. If z=(sqrt3-i)/2, then Find the. value of z^33

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  14. If ^25Cr=^25C(2r+1),the value of ^rC5is

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  15. If (1+x)^n=C0+C1x+C2x^2+…..+Cnx^n.then show that C1+2C2+….nCn=n.2^(n-1...

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  16. Calculate the sum of the series : 3-3/2+3/2^2-3/2^3+….

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  17. Find the length of the intercept of the staight line 3x +4y = 12 with ...

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  18. Find the image of the co-ordinate of a point.(-3, 4, 7) with respect t...

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  19. Find the value of :lim(xrarr0)(sin2x+sin6x)/(sin5x-sin3x)

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  20. If 4f(x) + 3f(-x) = 7 - 3x, find the value of f(1).

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