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NEW JOYTHI PUBLICATION-COMPLEX NUMBERS AND QUADRATIC EQUATIONS-QUESTIONS FROM COMPETITIVE EXAMS
- If x^(2) +4 ax +2 gt 0 for all values of x, then a lies in the interva...
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- If (x+iy)^(1/3)= 2+3i, then 3x+2y is equal to
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- The modulus of the complex number z such that |z+3-i|=1" and "arg z= p...
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- If z(1),z(2),"……"z(n) are complex numbers such that |z(1)|=|z(2)|="…."...
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- The value of (cos 30^(@)+isin 30^(@))/(cos 60^(@)-isin 60^(@)) is equa...
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- If z=r(cos theta+ isin theta), then the value of (z)/(bar z)+(barz)/(z...
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- If z(1)= sqrt(2)(cos ""(pi)/(4)+ isin""(pi)/(4))" and "z(2)= sqrt(3)(c...
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- The value of a for which the equation 2x^(2)+2 sqrt(6)x+a=0 has equal ...
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- If (3)/(2)+(7)/(2)i is a solution of the equation ax^(2)-6x+b=0, where...
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- If the roots of the equation x^(2)-bx+c=0 are two consecutive integers...
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- If alpha" and "beta are the roots of the equation ax^(2)+bx+c=0, (c ne...
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- If a and b are the roots of the equation x^(2)+ax+b=0, a ne 0, b ne 0,...
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- If x^(2)+px+q=0 has the roots alpha" and "beta, then the value of (alp...
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- The value of i-i^(2)+i^(3)-i^(4)+"……."-i^(100) is equal to
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- If the imaginary part of (2+i)/(ai-1) is zero, where a is a real numbe...
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- The argument of the complex number ((i)/(2)-(2)/(i)) is equal to
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- Let z(1)=3+4i" and "z(2)= -1+2i. Then |z(1)+z(2)|^(2)-2(|z(1)|^(2)+|z(...
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- If z(1)" and "z(2) are two non-zero complex numbers such that |z(1)+z(...
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- If the equation x^(2)-(2+m)x+(m^(2)-4m+4)=0 in x has equal roots, then...
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- The number of integral values of b, for which the equation x^(2)+bx-16...
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