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If the equation ax^(2)+2hxy+by^(2)+2gx+2...

If the equation `ax^(2)+2hxy+by^(2)+2gx+2fy+c=0` represents a pair of parallel lines, then

A

`2sqrt(((g^(2)-ac)/(h^(2)+a^(2))))`

B

`2sqrt(((g^(2)+ac)/(h^(2)+a^(2))))`

C

`3sqrt(((g^(2)+ac)/(a(a+b))))`

D

`3sqrt(((g^(2)+ac)/(a(a+b))))`

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The correct Answer is:
A
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-MOCK TEST 2-MCQS
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  3. If the equation ax^(2)+2hxy+by^(2)+2gx+2fy+c=0 represents a pair of pa...

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  4. Differentiate sin^(-1)((2x)/(1+x^2)) with respect to tan^(-1)((2...

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  5. If y^2 = p ( x ), a polynomial of degree 3, then 2 d/(dx) (y^3 (d^2y)/...

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  7. Prove that: int0^(2pi)(xsin^(2n)x)/(sin^(2n)+cos^(2n)x)dx

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  10. logically equivalent to ~(~p=>q) is

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  12. The value of cos^-1 (cos12) - sin^-1 (sin 12) is

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  14. If in a triangle ABC, a^2+b^2+c^2=ca+ab sqrt3 then the triangle is

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  15. The difference of the tangents of the angles which the lines x^(2)(sec...

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  16. If |a|=|b|=|c|=1anda*b=b*c=c.a=costheta,then the maximum value of thet...

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  17. If alpha,beta,gamma be the angles which a line makes with the coordina...

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  18. let |a|=2sqrt(2),|b|=3 and the angle between a and b is (pi)/(4). If a...

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  19. If y=sqrt(sinx+sqrt(sinx+sqrt(sinx+ . . .oo))), then (dy)/(dx) is equa...

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  20. If y=sqrt(((1+cos2theta)/(1-cos2theta))),(dy)/(d theta) at theta=(3pi)...

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