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For all 'x', x^(2)+2ax+10-3a gt 0, St...

For all `'x', x^(2)+2ax+10-3a gt 0`,
Statement 1 : the interval in which 'a' lies is `-5 lt a lt 2`
because
Statement 2 : the sign of coefficient of `x^(2)` and the quadratic expression are same for all R iff the discriminant is negative.

A

Statement - 1 is True, Statement - 2 is True, Statement - 2 is a correct explanation for Statement - 2

B

Statement - 1 is True, Statement - 2 is True, Statement - 2 is NOT a correct explanation for statement - 2

C

Statement - 1 is True, Statement - 2 is False

D

Statement - 1 is False, Statement - 2 is True

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AI Generated Solution

The correct Answer is:
To solve the inequality \( x^2 + 2ax + (10 - 3a) > 0 \) for all \( x \), we need to analyze the quadratic expression. ### Step 1: Identify the coefficients The quadratic expression can be written in the standard form \( ax^2 + bx + c \), where: - \( a = 1 \) - \( b = 2a \) - \( c = 10 - 3a \)
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FIITJEE-QUADRATIC EQUATION & EXPRESSION -ASSIGNMENT PROBLEMS (OBJECTIVE) Level - I
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  8. The number of positive integral solutions of x^4-y^4=3789108 is 0 b. 1...

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  10. If a ,b ,c are distinct positive numbers, then the nature of roots of ...

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  11. If roots of the equation x^2-2ax+a^2+a-3=0 are real and less than 3 t...

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  12. If a(1), a(2), a(3)(a(1)gt 0) are in G.P. with common ratio r, then th...

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  13. Let p(x)=0 be a polynomial equation of the least possible degree, with...

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  14. If alpha and beta are the roots of x^(2)-3px+p^(2)=0 such that alpha^(...

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  15. The number of solutions of the equation n^(-|x|)|m-|x||=1 (where m, n ...

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  16. If (m^2-3)x^2+3mx+ 3m+1=0 has roots which are reciprocals of each othe...

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  17. If the two equation x^(2)-cx+d=0 and x^(2)-ax+b=0 have one common root...

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  18. If the inequality (m x^2+3x+4+2x)//(x^2+2x+2)<5 is satisfied for all x...

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  19. If one of the roots of the equation 2x^(2)-6x+k=0 is (alpha + 5i)/(2) ...

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  20. For all 'x', x^(2)+2ax+10-3a gt 0, Statement 1 : the interval in wh...

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