हिंदी

Answer the following: Solve the following equation for x, y ∈ R: (4 − 5i)x + (2 + 3i)y = 10 − 7i - Mathematics and Statistics

Advertisements
Advertisements

प्रश्न

Answer the following:

Solve the following equation for x, y ∈ R:

(4 − 5i)x + (2 + 3i)y = 10 − 7i

योग

उत्तर

(4 − 5i)x + (2 + 3i)y = 10 − 7i

∴ (4x + 2y) + (3y − 5x) i = 10 − 7i

Equating real and imaginary parts, we get

4x + 2y = 10

i.e., 2x + y = 5  ...(i)

and 3y − 5x = −7  ...(ii)

Equation (i) x 3 − equation (ii) gives

11x = 22

∴ x = 2

Putting x = 2 in (i), we get

2(2) + y = 5

∴ y = 1

∴ x = 2 and y = 1

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 1: Complex Numbers - Miscellaneous Exercise 1.2 [पृष्ठ २२]

APPEARS IN

बालभारती Mathematics and Statistics 2 (Arts and Science) [English] 11 Standard Maharashtra State Board
अध्याय 1 Complex Numbers
Miscellaneous Exercise 1.2 | Q II. (2) (i) | पृष्ठ २२

संबंधित प्रश्न

Find the multiplicative inverse of the complex number.

–i 


If `((1+i)/(1-i))^m` = 1, then find the least positive integral value of m.


Show that 1 + i10 + i20 + i30 is a real number.


Find the value of i + i2 + i3 + i4 


Simplify the following and express in the form a + ib:

`3 + sqrt(-64)`


Simplify the following and express in the form a + ib:

(1 + 3i)2 (3 + i)


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(2) + sqrt(3)"i"`


Simplify : `("i"^592 + "i"^590 + "i"^588 + "i"^586 + "i"^584)/("i"^582 + "i"^580 + "i"^578 + "i"^576 + "i"^574)`


Show that 1 + i10 + i100 − i1000 = 0 


Is (1 + i14 + i18 + i22) a real number? Justify your answer


Evaluate: `("i"^37 + 1/"i"^67)`


Show that `((sqrt(7) + "i"sqrt(3))/(sqrt(7) - "i"sqrt(3)) + (sqrt(7) - "i"sqrt(3))/(sqrt(7) + "i"sqrt(3)))` is real


Find the value of x and y which satisfy the following equation (x, y ∈ R).

`((x + "i"y))/(2 + 3"i") + (2 + "i")/(2 - 3"i") = 9/13(1 + "i")`


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:

`5/2"i"(-4 - 3"i")`


Answer the following:

Simplify the following and express in the form a + ib:

`(1 + 2/"i")(3 + 4/"i")(5 + "i")^-1`


Answer the following:

Evaluate: (1 − i + i2)−15 


Answer the following:

Evaluate: i131 + i49 


Answer the following:

Find the value of x4 + 9x3 + 35x2 − x + 164, if x = −5 + 4i


Answer the following:

Show that z = `((-1 + sqrt(-3))/2)^3` is a rational number


If |z1| = 1, |z2| = 2, |z3| = 3 and |9z1z2 + 4z1z3 + z2z3| = 12, then the value of |z1 + z2 + z3| is


If z1 = 2 – 4i and z2 = 1 + 2i, then `bar"z"_1 + bar"z"_2` = ______.


Locate the points for which 3 < |z| < 4.


State true or false for the following:

Multiplication of a non-zero complex number by i rotates it through a right angle in the anti-clockwise direction.


State true or false for the following:

The argument of the complex number z = `(1 + i sqrt(3))(1 + i)(cos theta + i sin theta)` is `(7pi)/12 + theta`.


What is the value of `(i^(4n + 1) -i^(4n - 1))/2`?


Evaluate `sum_(n = 1)^13 (i^n + i^(n + 1))`, where n ∈ N.


If `((1 + i)/(1 - i))^3 - ((1 - i)/(1 + i))^3` = x + iy, then find (x, y).


The number `(1 - i)^3/(1 - i^2)` is equal to ______.


If `((1 + i)/(1 - i))^x` = 1, then ______.


Which of the following is correct for any two complex numbers z1 and z2?


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)`


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×