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Syllabus

what is (a+b+c)whole square

(1+x+xshow that^{2})^{n}= a_{0 +}a_{1}x +a_{2}x^{2}+ a_{3}x^{3}+ .......+ a_{2n}x^{2n},a_{0}+a_{3}+a_{6}+ .......... = 3^{n-1}sir how to solve quadratic inequalities by wavy curve method

if the ratio of the roots of the equation x

^{2}+px+q=0 is equal to the ratio of the roots of the equation x^{2}+lx+m=0, prove that mp^{2}=ql^{2}Q Find the square root of the complex number 5 -12i.If

thenx=3+i,?x^{3}-3x^{2}-8x+15=prove that

cosA +cosB +cosC +cos(A+B+C) = 4cos((A+B) / 2)cos((B+C) / 2)cos((C+A) / 2)

_{1}|=1 ,|z_{2}|=2 ,|z_{3}|=3 and |9z_{1}z_{2}+ 4z_{1}z_{3}+ z_{2}z_{3}|=12 then find |z_{1}+ z_{2}+ z_{3}|Find the modulus and argument of 1 + 2 i / 1 - 3 i ???

if z is a complex number and |z|=1 then prove that z-1/z+1 is a purely imaginary numberExpress in polar form 1 + 2i/1-3i

the argument of 1- i root 3 / 1 + 1 root 3 is

/32/34/3-2/3/6plz wid stEps i need it 2day itself.....

If (x+iy)^1/3 =(a+ib),prove that (x/a+y/b)=4(a^2-b^2)?

If z =(x+iy) and w =( 1 - iz) / (z - 1) such that | w | = 1 then show that z is purely real .

if alpha and beta are 2 different complex numbers with |beta| = 1, then find |beta-alpha/1-bar alpha*beta|

If the sum of the roots of the equation x

^{2}-px+q=0 be m times their difference, prove that p^{2}(m^{2}-1)=4m^{2}qfind sqrt(1-i)

solve the system of equation

Re(z

^{2})=0,|z|=2^{}if x

^{2}+x+1=0.then find the value of(x+1/x)^{2}+(x^{2}+1/x^{2})^{2}+(x^{3}+1/x^{3})^{2}+-------------(x^{2}^{7}+1/x^{27})^{2}if (x+iy)

^{3}= u+iv, then show that u/x +v/y = 4(x^{2}- y^{2})find the value of x and y if (1+i)x-2i/3+i + (2-3i)y+i/3-i =i

(a+bw+cw

^{2})/(b+cw+aw^{2}) +(a+bw+cw^{2})/(c+aw+w^{2}) is,1). 1

2). -1

3). 2

4). -2

where, w represents omega.

Find the value of a for which one root of the quadratic equation (a

^{2}-5a+3)x^{2}+(3a-1)x+2=0 is twice as large as the other.How can we eliminate alpha here? Please solve the problem?if x-iy=underroot [(a-ib)/(c-id)]

prove that(x

^{2}+y^{2})^{2}= a^{2}+b^{2}/c^{2}+d2A)x=-2

B)x=2

C)y=-2

D)y=1

Solve :-

x^{2}-(7 - i) x + (18 - i) = 0 over C.ANURAG.Show that if x is real , the expression x2-bc/ 2x-b-c has no real value between b and c.

Solve :-

2x^{2}- (3+7i) x - (3-9i) = 0ANURAG.express i-39 (iota raised to the power minus 39) in the form of a+ib

if (x+iy)(2-3i)=4+i then find (x,y)

^{2}+ y^{2}= (a^{2}+ b^{2}/ c^{2}+ d^{2})a+ibc+id

If x + iy = a + ib/a- ib, show that x

^{2}+y^{2}=1If x = 2 + 2

^{2/3}+ 2^{1/3}, then find the value of x^{3 }- 6x^{2}+ 6x.if Z is a complex number such that Z-1 / Z+1 is purely imaginary.prove that |Z|=1

if a

^{2}+ b^{2}=1 , then find the value of 1+b+ia/1+b-iaIf 3/(2+cosx+isinx)=a+ib, prove that a^2+b^2=4a-3.

let alpha and beta are the roots of x

^{2}-6x-2=0,with alpha beta . if a_{n}=alpha^{n}-beta^{n }for n=1,then value of a(greater than or equal to one)_{10}-2a_{8}/ 2a_{9 }is??if lzl=4 and argument of z=5pi/6

then write z in x+iy form

if a+ib= c+i / c-i , where c is real part

prove that

a square + b square =1

and b / a =2c / c square-1

prove that : arg(z1z2) = arg(z1) + arg(z2)

if a is not equal to b and a^2=5a -3 , b^2=5b-3, then form the equation whose roots are a/b and b/a

if the sum of the roots of the equation ax2 + bx + c = 0 is equal to the sum of the squares of their squares of their reciprocals , then show that bc

^{2}, ca^{2}, ab^{2}are in A.P.Q. If p+iq = (a-i)

^{2}/ 2a-i , show that p^{2}+q^{2}= (a^{2}+1)^{2}/ 4a^{2}+1.For the quadratic equation ax2+bx+c+0, find the condition that

(i) one root is reciprocal of other root

(ii) one root is m times the other root

(iii) one root is square of the other root

(iv) one root is nth power of the other root

(v) the roots are in the ratio m:n

^{6}+ x^{4}+ x^{2}+ x + 3 = 0 has positive real roots.how to find the multiplicative inverse of 2-3i

Express in form of a+ib

(1-i)/(1+i)...

Please help me expert......

find the smallest positive integer n for which (1+i)^2n =(1-i)^2n

The Value of arg(z)+arg(z conjugate) = ?

Express it in the polar form: (i-1) / (cospi/3) + (isin pi/3).Also Find the arguement and modulus.

supplementary exercise

a,b,c are three distinct real numbers and they are in G.P. If a+b+c = xb, then prove that x<-1 or x>3.

if a =cosA+isinA,find the value of (1+a)/(1-a)

Solve for z, the equation |z|+ z = 2 + i

Evaluate :

2x

^{3}+2x^{2}-7x+72,when x=(3-5i)/2find the square root of

the value of a for which the sum of square of roots of equation x

^{2}-(a-2)x-a-1=0. the least value isShow that the roots of (x-b)(x-c) +(x-c)(x-a) +(x-a)(x-b) =0 are real, and that they cannot be equal unless a=b=c.

SUPPOSE z

_{1 }z_{2 }z_{3 }ARE THE VERTICES OF AN EQUILATERAL TRIANGLE INSCRIBED IN THE CIRCLE / Z / = 2 IF z_{1}= 1 + 3 1/2 ITHEN z

_{2}& z_{3}areProvide R.D Sharma solutions of class 11 as it is a common demand by many students

If (1+i/1-i)

^{3}- (1-i/1+i)^{3}= x+iy, then find (x,y)if a+ib =( (x+i)

^{2}) / (2x^{2}+ 1)prove that a2 +b

^{2}=((x^{2}+ 1)^{2}) / (2x^{2}+1)^{2}solve :(2 + i)x

^{2 }- (5 -i)x + 2(1-i) = 0NCERT TEXTBOOK : CHAPTER 05

COMPLEX NUMBERS

MISC. EXAMPLE 16 plz explain.

cant understand how to get the theta.

tomorrow is my exam.....plz give me an appropriate answer at the earliest. :)

thanx in advance.

PROVE THAT A REAL VALUE OF x WILL SATISFY THE EQUATION 1 - ix / 1 + ix = a - ib , if a

^{2}+ b^{2}=1 ; where 'a' and 'b' are real.. the value of 'b' for which equationsQx

^{2}+bx-1=0x

^{2}+x+b=0have one root in common is ??

n n+1 are in power .

If the roots of the equation x

^{2}-2ax+a^{2}+a-3 =0 are less than 3 then find the set of all possible values of a. (ans : -infinity, 2)^{4}+ beta^{4}+ alpha^{-1}beta^{-1}= 0If [(1-i)/(1+i)]

^{100}=a+ib, then find (a,b)if z=(3+7i)(p+iq),where p,q are non-zero integers,is purely imaginary then minimum value of |z|^2 is

Find the least positive integral value of n for which (1+i/1-i)

^{n}is real.Let z1 and z2 be two complex numbers such that z1 + iz2 = 0 and arg (z1z2) = pi.

Find arg (z1).

If a+ib = c+i / c-i, where c is real, prove that a

^{2}+ b^{2 }=1 and b/a = 2c / c^{2}-1.^{2}+ax-3b) *(x^{2}-cx+b) *(x^{2}-dx+2b)=0 has atleast two real roots.