English

Answer the following: Simplify: (i65+1i145) - Mathematics and Statistics

Advertisements
Advertisements

Question

Answer the following:

Simplify: `("i"^65 + 1/"i"^145)`

Sum

Solution

`("i"^65 + 1/"i"^145)`

= `|("i"^4)^16*"i" + 1/(("i"^4)^36*"i")|`

= `"i" + 1/"i"`

= `("i"^2 + 1)/"i"`

= `(-1 + 1)/"i"`

= 0

shaalaa.com
  Is there an error in this question or solution?
Chapter 1: Complex Numbers - Miscellaneous Exercise 1.2 [Page 22]

APPEARS IN

Balbharati Mathematics and Statistics 2 (Arts and Science) [English] 11 Standard Maharashtra State Board
Chapter 1 Complex Numbers
Miscellaneous Exercise 1.2 | Q II. (16) (ii) | Page 22

RELATED QUESTIONS

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

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


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


Find the value of: 2x3 – 11x2 + 44x + 27, if x = `25/(3 - 4"i")`


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

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


Write the conjugates of the following complex number:

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


Find the value of i49 + i68 + i89 + i110 


Find the value of i + i2 + i3 + i4 


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 


Find the value of `("i"^6 + "i"^7 + "i"^8 + "i"^9)/("i"^2 + "i"^3)`


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:

(2i3)2 


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:

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


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 equation for x, y ∈ R:

(4 − 5i)x + (2 + 3i)y = 10 − 7i


Answer the following:

Solve the following equation for x, y ∈ R:

`(x + "i"y)/(2 + 3"i")` = 7 – i


Answer the following:

Evaluate: (1 − i + i2)−15 


Answer the following:

Simplify: `("i"^29 + "i"^39 + "i"^49)/("i"^30 + "i"^40 + "i"^50)`


If z ≠ 1 and `"z"^2/("z - 1")` is real, then the point represented by the complex number z lies ______.


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


The argument of the complex number `(4 + 9i)/(13 + 5i)` is ______


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


If (2 + i) (2 + 2i) (2 + 3i) ... (2 + ni) = x + iy, then 5.8.13 ... (4 + n2) = ______.


State true or false for the following:

The complex number cosθ + isinθ can be zero for some θ.


What is the smallest positive integer n, for which (1 + i)2n = (1 – i)2n?


What is the principal value of amplitude of 1 – i?


If the complex number z = x + iy satisfies the condition |z + 1| = 1, then z lies on ______.


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


If z = x + iy, then show that `z  barz + 2(z + barz) + b` = 0, where b ∈ R, represents a circle.


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


The point represented by the complex number 2 – i is rotated about origin through an angle `pi/2` in the clockwise direction, the new position of point is ______.


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


Let z be a complex number such that `|(z - i)/(z + 2i)|` = 1 and |z| = `5/2`. Then the value of |z + 3i| is ______.


Let `(-2 - 1/3i)^2 = (x + iy)/9 (i = sqrt(-1))`, where x and y are real numbers, then x – y equals to ______.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×