Home
Class 11
MATHS
Convert [(3+2i)/( 3-2i)+ (3 -2i)/(3+2i)...

Convert ` [(3+2i)/( 3-2i)+ (3 -2i)/(3+2i)]` in the form of `(a+ib)`.

Text Solution

AI Generated Solution

The correct Answer is:
To convert the expression \(\frac{3+2i}{3-2i} + \frac{3-2i}{3+2i}\) into the form \(a + ib\), we can follow these steps: ### Step 1: Combine the fractions We start by finding a common denominator for the two fractions. The common denominator is \((3 - 2i)(3 + 2i)\). \[ \frac{3 + 2i}{3 - 2i} + \frac{3 - 2i}{3 + 2i} = \frac{(3 + 2i)(3 + 2i) + (3 - 2i)(3 - 2i)}{(3 - 2i)(3 + 2i)} \] ### Step 2: Expand the numerators Now we will expand the numerators: 1. For \((3 + 2i)(3 + 2i)\): \[ = 3^2 + 2 \cdot 3 \cdot 2i + (2i)^2 = 9 + 12i + 4i^2 = 9 + 12i - 4 = 5 + 12i \] 2. For \((3 - 2i)(3 - 2i)\): \[ = 3^2 - 2 \cdot 3 \cdot 2i + (2i)^2 = 9 - 12i + 4i^2 = 9 - 12i - 4 = 5 - 12i \] Now, we can add these two results together: \[ (5 + 12i) + (5 - 12i) = 5 + 5 + 12i - 12i = 10 \] ### Step 3: Expand the denominator Now we will expand the denominator: \[ (3 - 2i)(3 + 2i) = 3^2 - (2i)^2 = 9 - 4(-1) = 9 + 4 = 13 \] ### Step 4: Combine the results Now we can combine the results from the numerator and denominator: \[ \frac{10}{13} \] ### Step 5: Write in the form \(a + ib\) Since there is no imaginary part, we can express this as: \[ \frac{10}{13} + 0i \] Thus, the final answer in the form \(a + ib\) is: \[ \frac{10}{13} + 0i \]

To convert the expression \(\frac{3+2i}{3-2i} + \frac{3-2i}{3+2i}\) into the form \(a + ib\), we can follow these steps: ### Step 1: Combine the fractions We start by finding a common denominator for the two fractions. The common denominator is \((3 - 2i)(3 + 2i)\). \[ \frac{3 + 2i}{3 - 2i} + \frac{3 - 2i}{3 + 2i} = \frac{(3 + 2i)(3 + 2i) + (3 - 2i)(3 - 2i)}{(3 - 2i)(3 + 2i)} \] ...
Promotional Banner

Topper's Solved these Questions

  • COMPLEX NUMBERS AND QUADRATIC EQUATION

    NAGEEN PRAKASHAN ENGLISH|Exercise EXERCISE 5C|14 Videos
  • COMPLEX NUMBERS AND QUADRATIC EQUATION

    NAGEEN PRAKASHAN ENGLISH|Exercise EXERCISE 5D|6 Videos
  • COMPLEX NUMBERS AND QUADRATIC EQUATION

    NAGEEN PRAKASHAN ENGLISH|Exercise EXERCISE 5A|9 Videos
  • BINOMIAL THEOREM

    NAGEEN PRAKASHAN ENGLISH|Exercise Miscellaneous Exericse|20 Videos
  • CONIC SECTION

    NAGEEN PRAKASHAN ENGLISH|Exercise Miscellaneous Exercise|8 Videos

Similar Questions

Explore conceptually related problems

Express (1- 2i)/(2+i) + (3+i)/(2-i) in the form a + bi

Express (4-3i)^(3) in the form (a+ib) .

Express (1 /(2 -2i)+3/(1+i)) ((3+ 4i)/(2-4i)) in the form of a +ib

Express ( 1/3 + 4/3 i)^(2) in the form of a + ib.

Convert ((1)/(2)+2i)^(3) in the form of a+ib .

Express: ((1+i)^3)/(4+3i) in the form a+ib

Prove that [((3+2i)/(2-5i))+ ((3-2i)/(2+5i))] is rational

Convert ((2+3i)^(2))/(2-i) in the form of a+ib and find its conjugate.

Show that (1+ 2i)/(3+4i) xx (1-2i)/(3-4i) is real

Find (2+4i)(3-2i)+(-3i)(5i)

NAGEEN PRAKASHAN ENGLISH-COMPLEX NUMBERS AND QUADRATIC EQUATION -EXERCISE 5B
  1. Perform the indicated operation and find the result in the form a+i b ...

    Text Solution

    |

  2. Prove that ((-1+isqrt(3))/(2))^(3) is a positive integer.

    Text Solution

    |

  3. Convert [(3+2i)/( 3-2i)+ (3 -2i)/(3+2i)] in the form of (a+ib).

    Text Solution

    |

  4. Prove that : (i) sqrt(i)= (1+i)/(sqrt(2)) (ii) sqrt(-i)=(1- i)/(sqr...

    Text Solution

    |

  5. Find the sum and product of the complex number (3-4i) with its conjug...

    Text Solution

    |

  6. Find the sum and product of the complex number (-1 +2i) with its conj...

    Text Solution

    |

  7. Find the multiplicative inverse of the following complex number: (2+sq...

    Text Solution

    |

  8. Write the following in the form of ordered pair : (i) 3-2i (ii)...

    Text Solution

    |

  9. Convert the following in the form of a complex number : (i) (2, -5)...

    Text Solution

    |

  10. Find the values of x and y from the following : (i) (3x -7)+2iy=-5y+...

    Text Solution

    |

  11. If z=1+2i, show that z^(2)-2z+5=0. Hence find the value of z^(3) +7z^...

    Text Solution

    |

  12. Z=-5+4i then Z^4 +9Z^3 +35Z^2 – Z + 4 =

    Text Solution

    |

  13. If z(1)=2-i, z(2)=1+ 2i, then find the value of the following : (i)...

    Text Solution

    |

  14. If x + i y =(a+i b)/(a-i b),prove that x^2+y^2=1.

    Text Solution

    |

  15. (x+iy)^(1/3) =(a+ib) then prove that (x/a+y/b)=4(a^2-b^2)

    Text Solution

    |

  16. If ((a^(2)+1)^(2))/(2a-i) = a + iy , then what is the value of x^...

    Text Solution

    |

  17. Write the least positive integral value of n for which ((1+i)/(1-i))^n...

    Text Solution

    |

  18. The complex number z is purely imaginary , if

    Text Solution

    |

  19. A number of the form a + ib is called a complex number, where a,b in R...

    Text Solution

    |

  20. Find the real values of theta for which the complex number (1+i costhe...

    Text Solution

    |