The correct statements are `I:` if `alpha and beta` are real and unequal then `lambda and delta` are also real. `II:` If `alpha and beta` are imaginary then `lambda and delta` are also imaginary.

Let the roots of f(x)=xbe alpha and beta where f(x) is quadratic polynomial ax^2+bx+c.alpha and beta are also the roots of f(f(x))=x. Let the other two roots of f(f(x))=x be gamma and lamda Statement I : if alpha and beta are real unequal then gamma and lamda are also real. Statement II : if alpha and beta are imaginary then gamma and lamda are also imaginary. The correct statement are

Consider two complex numbers alphaa n dbeta as alpha=[(a+b i)//(a-b i)]^2+[(a-b i)//(a+b i)]^2 , where a ,b , in R and beta=(z-1)//(z+1), w here |z|=1, then find the correct statement: both alphaa n dbeta are purely real both alphaa n dbeta are purely imaginary alpha is purely real and beta is purely imaginary beta is purely real and alpha is purely imaginary

Consider two complex numbers alphaa n dbeta as alpha=[(a+b i)//(a-b i)]^2+[(a-b i)//(a+b i)]^2, where a ,b , in R and beta=(z-1)//(z+1), w here |z|=1, then find the correct statement: both alphaa n dbeta are purely real both alphaa n dbeta are purely imaginary alpha is purely real andbeta is purely imaginary beta is purely real and alpha is purely imaginary

Consider two complex numbers alphaa n dbeta as alpha=[(a+b i)//(a-b i)]^2+[(a-b i)//(a+b i)]^2 , where a ,b , in R and beta=(z-1)//(z+1), w here |z|=1, then find the correct statement: (a)both alphaa n dbeta are purely real (b)both alphaa n dbeta are purely imaginary (c) alpha is purely real and beta is purely imaginary (d) beta is purely real and alpha is purely imaginary

If alphaand beta are real them |(alpha+i beta)/(beta+ialpha)|=

If cot alpha=tan (beta+delta) then alpha+beta+delta =

The real part of sinh (alpha + I beta) is

If alpha and beta are the roots of the equation x^(2)+6x+lambda=0 and 3 alpha+2 beta=-20 ,then lambda=