हिंदी

Find the number of non-zero integral solutions of the equation |1-i|x =2x.

Advertisements
Advertisements

प्रश्न

Find the number of non-zero integral solutions of the equation `|1-i|^x  = 2^x`.

योग
Advertisements

उत्तर

`|1-i|^x  = 2^x`

⇒ `(sqrt(1^2 + (-1)^2))^x = 2^x`

⇒ `(sqrt2)^x  = 2^x`

⇒ `2^(x/2)  = 2^x`

⇒ `x/2  = x`

⇒ x = 2x

⇒ 2x - x = 0

⇒ x = 0

This equation cannot have any solution other than 0.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 4: Complex Numbers and Quadratic Equations - Miscellaneous Exercise [पृष्ठ ८६]

APPEARS IN

एनसीईआरटी Mathematics [English] Class 11
अध्याय 4 Complex Numbers and Quadratic Equations
Miscellaneous Exercise | Q 12. | पृष्ठ ८६

वीडियो ट्यूटोरियलVIEW ALL [1]

संबंधित प्रश्न

Find the multiplicative inverse of the complex number.

–i 


Express the following expression in the form of a + ib.

`((3 + sqrt5)(3 - isqrt5))/((sqrt3 + sqrt2i)-(sqrt3 - isqrt2))`


Find the value of i + i2 + i3 + i4 


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

(2 + 3i)(1 – 4i)


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: x3 – 5x2 + 4x + 8, if x = `10/(3 - "i")`.


Write the conjugates of the following complex number:

3 – i


Write the conjugates of the following complex number:

5i


Find the value of i49 + i68 + i89 + i110 


If `("a" + 3"i")/(2+ "ib")` = 1 − i, show that (5a − 7b) = 0


If (a + ib) = `(1 + "i")/(1 - "i")`, then prove that (a2 + b2) = 1


If (x + iy)3 = y + vi then show that `(y/x + "v"/y)` = 4(x2 – y2)


Select the correct answer from the given alternatives:

If n is an odd positive integer then the value of 1 + (i)2n + (i)4n + (i)6n is :


Select the correct answer from the given alternatives:

The value of is `("i"^592 + "i"^590 + "i"^588 + "i"^586 + "i"^584)/("i"^582 + "i"^580 + "i"^578 + "i"^576 + "i"^574)` is equal to:


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:

Solve the following equation for x, y ∈ R:

`(x + "i"y)/(2 + 3"i")` = 7 – i


Answer the following:

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


Show that `(1/sqrt(2) + "i"/sqrt(2))^10 + (1/sqrt(2) - "i"/sqrt(2))^10` = 0


Answer the following:

show that `((1 + "i")/sqrt(2))^8 + ((1 - "i")/sqrt(2))^8` = 2


Answer the following:

If x + iy = `("a" + "ib")/("a" - "ib")`, prove that x2 + y2 = 1


The real value of ‘a’ for which 3i3 – 2ai2 + (1 – a)i + 5 is real is ______.


The value of `(- sqrt(-1))^(4"n" - 3)`, where n ∈ N, is ______.


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 locus of z, if amplitude of z – 2 – 3i is `pi/4`?


Number of solutions of the equation z2 + |z|2 = 0 is ______.


If (1 + i)z = `(1 - i)barz`, then show that z = `-ibarz`.


If `(z - 1)/(z + 1)` is purely imaginary number (z ≠ – 1), then find the value of |z|.


If |z1| = |z2| = ... = |zn| = 1, then show that |z1 + z2 + z3 + ... + zn| = `|1/z_1 + 1/z_2 + 1/z_3 + ... + 1/z_n|`.


Multiplicative inverse of 1 + i is ______.


State True or False for the following:

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


Find `|(1 + i) ((2 + i))/((3 + i))|`.


If `(x + iy)^(1/5)` = a + ib, and u = `x/a - y/b`, then ______.


The smallest positive integer n for which `((1 + i)/(1 - i))^n` = –1 is ______.


If α, β, γ and a, b, c are complex numbers such that `α/a +  β/b + γ/c` = 1 + i and `a/α +  b/β + c/γ` = 0, then the value of `α^2/a^2 +  β^2/b^2 + γ^2/c^2` is equal to ______.


Show that `(-1 + sqrt3 i)^3` is a real number.


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)`


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×