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RD SHARMA-COMPLEX NUMBERS-Solved Examples And Exercises
- If z=2-3i show that z^2-4z+13=0 and hence find the value of 4z^3-3z^...
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- If |z1|=|z2|=.......=|zn|=1, prove that |z1+z2+z3++zn|=1/(z1)+1/(z2)+...
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- Find the non-zero complex numbers z satisfying barz =i z^2dot
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- Show that if iz^3+z^2-z+i=0, then |z|=1
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- Solve the equation z^2 +|z|=0 , where z is a complex number.
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- If z1, z2a n dz3, z4 are two pairs of conjugate complex numbers, prove...
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- If zr=cos(pi/(3^r))+isin(pi/(3^r)),r=1,2,3, , prove that z1z2z3 zoo=i...
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- If xn=cospi/(2^n)+isinpi/(2^n) , prove that x1x2x3 xoo=-1.
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- Find the square roots of the following: 7-24 i (ii) 5+12 i
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- Find the square roots of -15-8idot
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- Find the number of solutions of z^2+|z|^2=0.
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- If ((a^2+1)/(2a-i))^2=x+i y , find the value of x^2+y^2dot
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- Let z1a n dz2 be two complex numbers such that ( z )1+i( z )2=0a n d...
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- If |z-5i|=|z+5i , then the locus of zdot
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- If z1a n dz2 both satisfy z+\bar z =2|z-1| and a r g(z1-z2)=pi/4 , the...
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- Show that the complex number z , satisfying are (z-1)/(z+1)=pi/4 lies ...
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- If z=(1+7i)/((2-i)^2) , then (a)|z|=2 (b) |z|=1/2 c) a m p(z)=pi/4 (d)...
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- The value of (i^5+i^6+i^7+i^8+i^9)/(1+i) is (a) 1/2(1+i) (b) 1/2(1-...
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- Write the least positive integral value of n for which ((1+i)/(1-i))^n...
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- If f(z)=(7-z)/(1-z^2) , where z=1+2i , then |f(z)| is (a)(|z|)/2 ...
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