Advertisements
Advertisements
प्रश्न
If `((1 + i)/(1 - i))^3 - ((1 - i)/(1 + i))^3` = x + iy, then find (x, y).
Advertisements
उत्तर
We have `((1 + i)/(1 - i))^3 - ((1 - i)/(1 + i))^3` = x + iy
⇒ `[(1 + i)/(1 - i) xx (1 + i)/(1 + i)]^3 - [((1 - i)(1 - i))/((1 + i)(1 - i))]^3` = x + iy
⇒ `[(1 + i^2 + 2i)/(1 - i^2)]^3 - [(1 + i^2 - 2i)/(1 - i^2)]^3` = x + iy
⇒ `[(1 - 1 + 2i)/(1 + 1)]^3 - [(1 - 1 - 2i)/(1 + 1)]^3` = x + iy
⇒ `((2i)/2)^3 - ((-2i)/2)^3` = x + iy
⇒ (i)3 – (–i)3 = x + iy
⇒ i2.i + i2.i = x + iy
⇒ –i – i = x + iy
⇒ 0 – 2i = x + iy
Comparing the real and imaginary parts,
We get x = 0, y = –2
Hence, (x, y) = (0, –2).
APPEARS IN
संबंधित प्रश्न
If `x – iy = sqrt((a-ib)/(c - id))` prove that `(x^2 + y^2) = (a^2 + b^2)/(c^2 + d^2)`
Find the number of non-zero integral solutions of the equation `|1-i|^x = 2^x`.
Find the value of i + i2 + i3 + i4
Simplify the following and express in the form a + ib:
`(1 + 2/i)(3 + 4/i)(5 + i)^-1`
Find the value of: x3 – 5x2 + 4x + 8, if x = `10/(3 - "i")`.
Write the conjugates of the following complex number:
`-sqrt(5) - sqrt(7)"i"`
Write the conjugates of the following complex number:
5i
Find the value of i + i2 + i3 + i4
Find the value of x and y which satisfy the following equation (x, y∈R).
(x + 2y) + (2x − 3y)i + 4i = 5
Answer the following:
Simplify the following and express in the form a + ib:
(2 + 3i)(1 − 4i)
Answer the following:
Simplify the following and express in the form a + ib:
`(4 + 3"i")/(1 - "i")`
Answer the following:
Simplify the following and express in the form a + ib:
`(3"i"^5 + 2"i"^7 + "i"^9)/("i"^6 + 2"i"^8 + 3"i"^18)`
Answer the following:
Solve the following equations for x, y ∈ R:
(x + iy) (5 + 6i) = 2 + 3i
Solve the following equation for x, y ∈ R:
2x + i9y (2 + i) = xi7 + 10i16
Answer the following:
Find the value of x3 + 2x2 − 3x + 21, if x = 1 + 2i
Answer the following:
Simplify: `("i"^65 + 1/"i"^145)`
The argument of the complex number `(4 + 9i)/(13 + 5i)` is ______
If `(x + iy)^(1/3)` = a + ib, where x, y, a, b ∈ R, show that `x/a - y/b` = –2(a2 + b2)
The value of `(- sqrt(-1))^(4"n" - 3)`, where n ∈ N, is ______.
If the real part of `(barz + 2)/(barz - 1)` is 4, then show that the locus of the point representing z in the complex plane is a circle.
If |z1| = |z2| = ... = |zn| = 1, then show that |z1 + z2 + z3 + ... + zn| = `|1/z_1 + 1/z_2 + 1/z_3 + ... + 1/z_n|`.
State True or False for the following:
The inequality |z – 4| < |z – 2| represents the region given by x > 3.
Where does z lie, if `|(z - 5i)/(z + 5i)|` = 1.
The value of `(z + 3)(barz + 3)` is equivalent to ______.
If z is a complex number, then ______.
Let |z| = |z – 3| = |z – 4i|, then the value |2z| is ______.
If z1, z2, z3 are complex numbers such that |z1| = |z2| = |z3| = `|1/z_1 + 1/z_2 + 1/z_3|` = 1, then |z1 + z2 + z3| is ______.
If `(x + iy)^(1/5)` = a + ib, and u = `x/a - y/b`, then ______.
A complex number z is moving on `arg((z - 1)/(z + 1)) = π/2`. If the probability that `arg((z^3 -1)/(z^3 + 1)) = π/2` is `m/n`, where m, n ∈ prime, then (m + n) is equal to ______.
`((1 + cosθ + isinθ)/(1 + cosθ - isinθ))^n` = ______.
Find the value of `(i^592+i^590+i^588+i^586+i^584)/(i^582+i^580+i^578+i^576+i^574)`
Find the value of `(i^592 + i^590 + i^588 + i^586 + i^584)/ (i^582 + i^580 + i^578 + i^576 + i^574)`
Simplify the following and express in the form a+ib.
`(3i^5 + 2i^7 + i^9)/(i^6 + 2i^8 + 3i^18)`
Simplify the following and express in the form a+ib.
`(3i^5 + 2i^7 + i^9)/(i^6 + 2i^8 + 3i^18`
Find the value of `sqrt(-3) xx sqrt(-6)`
Simplify the following and express in the form a+ib:
`(3i^5 + 2i^7 + i^9)/(i^6 + 2i^8 + 3i^18)`
Evaluate the following:
i35
i2 + i3 + ... + i4000 =
