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If the straight line ax +by+c=0 always p...

If the straight line ax +by+c=0 always passes through (1,-2) then a,b,c are in

A

H.P

B

A.P

C

G.P

D

none of these

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The correct Answer is:
B
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MODERN PUBLICATION-MOCK TEST PAPER -IV-SELECT THE CORRECT ANSWER
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  2. If in the expansion of (1+x)^(m)(1-x)^(n) the coefficients of x and x^...

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  3. If the straight line ax +by+c=0 always passes through (1,-2) then a,b,...

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  4. A straight line through P(1,2) is such that the intercept between the...

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  5. If the line through A=(4,-5) is inclined at an anlge 45^(@) with the p...

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  6. The mean and variance for the data 6,7,10,12,13,4,8,12 respectively ar...

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  7. If tan(x+y)=33, and x= tan^(-1)3, then: y=

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  8. Prove that: (sin x - sin 3x)/(sin^(2)x-cos^(2)x)=2sinx

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  9. The number of solution of the eqution |cot x|=cot x+(1)/(sin x)(0 le x...

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  10. The number of solution of the eqution |cot x|=cot x+(1)/(sin x)(0 le x...

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  11. cot^(-1)(21) +cot^(-1)(13)+co^(-1)(8)=

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  12. tan(cos^(-1)(1)/(5sqrt(2))-sin^(-1)(4)/sqrt(17)) is

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  13. If a,b,c are A.P then the value of the determinant |(x+2,x+3,x+2a),...

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  14. If A = [(alpha,2),(2,alpha)]and A^(3)=27 then alpha =

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  15. If A ={:[(1,0),(1,1)]:} and A^(8) =aA+bI , then (a,b) =

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  16. If A ={:[(a,0,0),(0,a,0),(0,0,a)]:} then det (Adj A) is

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  17. lim(x rarr oo) (sqrt(a^(2) x^(2) + bx + c) - ax) =

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  18. If y = log 1-x^(x^(2))/(1+x^(2)) then (dy)/(dx) is equal to

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  19. If f(x)=log(x^(2))(log x) , then f(x) at x=e is

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  20. The slant height of a cone is fixed at 7 cm if the rate of increase o...

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