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If (sinalpha)x^2-2x+bgeq2 for all real v...

If `(sinalpha)x^2-2x+bgeq2` for all real values of `xlt=1a n dalpha in (0,pi/2)uu(pi/2,pi)` , then the possible real values of `b` is/are 2 (b) 3 (c) 4 (d) 5

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CENGAGE PUBLICATION-COMPLEX NUMBERS AND QUADRATIC EQUATIONS-All Questions
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  2. If z=z0+A( bar z -( bar z 0)), w h e r eA is a constant, then prove t...

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  3. If (sinalpha)x^2-2x+bgeq2 for all real values of xlt=1a n dalpha in (0...

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  4. If z1, z2, z3 are three complex numbers such that 5z1-13 z2+8z3=0, t...

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  5. If one root x^2-x-k=0 is square of the other, then k= a.2+-sqrt(5)...

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  6. If z1, z2 are complex number such that (2z1)/(3z2) is purely imaginary...

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  7. If alpha,a n dbeta be the roots of the equation x^2+p x-1//2p^2=0,w h ...

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  8. If z1,z2,z3 are complex numbers such that 2/z1=1/z2 + 1/z3, show that ...

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  9. Find the range of f(x)(x^2-x+1)/(x^2+x+1)

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  10. If ((3-z1)/(2-z1))((2-z2)/(3-z2))=k(k >0) , then prove that points A(z...

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  11. x^2-x y+y^2-4x-4y+16=0 represents a. a point b. a circle c. ...

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  12. If (x+i y)^5=p+i q , then prove that (y+i x)^5=q+i pdot

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  13. If alpha,beta are the nonzero roots of a x^2+b x+c=0 and alpha^2,beta^...

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  14. Find real theta such that (3+2isintheta)/(1-2isintheta) is purely real...

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  15. If the roots of the equation a x^2+b x+c=0 are of the form (k+1)/k and...

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  16. Prove that tan(iloge((a-ib)/(a+ib)))=(2ab)/(a^2-b^2) (where a, b in ...

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  17. If alpha,beta are the roots of a x^2+b x+c=0a n dalpha+h ,beta+h are t...

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  18. Find the real part of (1-i)^(-i)dot

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  19. The equation (x^2+x+1)^2+1=(x^2+x+1)(x^2-x-5) for x in (-2,3) will h...

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  20. Convert of the complex number in the polar form: 1-i

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