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Home /Doubts and Solutions/CBSE/Class 11 Science/Mathematics/Complex Numbers And Quadratic Equations

Complex Numbers And Quadratic Equations Free Doubts and Solutions

CBSE - XI Science - Mathematics - Complex Numbers and Quadratic Equations

TO EXPETR - SNEHA MY QUESTION IS THAT WHY n SHOULD BE EVEN FOR ALL THREE CONDITION. PLZ EXPLAIN IN DETAIL SO THAT STUDENT SHOULD NOT GET CONFUSED.

Asked by mahesh_udr2000 5th September 2017, 11:50 AM
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CBSE - XI Science - Mathematics - Complex Numbers and Quadratic Equations

Q) Let 'a' be a non zero real number & 
alpha comma beta space b e space t h e space r o o t s space o f space t h e space e q u a t i o n space a x squared plus 5 x plus 2 equals 0. space T h e n space t h e space a b s o l u t e space v a l u e space o f space t h e space d i f f e r e n c e space o f space t h e space r o o t s space o f space t h e space e q u a t i o n space
a cubed left parenthesis x plus 5 right parenthesis squared minus 25 a left parenthesis x plus 5 right parenthesis plus 50 equals 0 space i s spaceleft parenthesis A right parenthesis open vertical bar alpha squared minus beta squared close vertical bar space space space space space left parenthesis B right parenthesis open vertical bar alpha beta left parenthesis alpha squared minus beta squared right parenthesis close vertical bar space space space space space left parenthesis C right parenthesis open vertical bar fraction numerator alpha squared minus beta squared over denominator alpha beta end fraction close vertical bar space space space space left parenthesis D right parenthesis open vertical bar fraction numerator alpha squared minus beta squared over denominator alpha squared beta squared end fraction close vertical bar

Asked by araima2001 23rd November 2016, 10:36 AM
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CBSE - XI Science - Mathematics - Complex Numbers and Quadratic Equations

Simplify 
(a + ib)^2/a-ib  - (a-ib)^2/(a+ib)

Asked by dalbirgolagarh 8th July 2016, 6:12 PM
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CBSE - XI Science - Mathematics - Complex Numbers and Quadratic Equations

what is value of i to the power of i (iota)?

Asked by Bhavi Khatri 9th September 2015, 3:55 PM
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CBSE - XI Science - Mathematics - Complex Numbers and Quadratic Equations

Find the condition when one root is equal to the square of other if  the equation is of the form: ax^2+bx+c = 0 .

Asked by Sanjay 6th June 2015, 6:43 PM
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CBSE - XI Science - Mathematics - Complex Numbers and Quadratic Equations

solve for x :

a) 2x^1/2+1/3-x^1/2=11-3x^1/2/5x^1/2-9 , b)  (x+1)(x+2)(x-3)(x-4) =  336
 
and
 
c) (x+1)^1/2 + (2x-5)^1/2 = 3                    d)2^2x +2^x+2 - 32 = 0

Asked by Sanjay 17th May 2015, 12:02 AM
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CBSE - XI Science - Mathematics - Complex Numbers and Quadratic Equations

Which term of AP 7-4i,6-2i,5-0i,4+2i is purely real and purely imaginary 

Asked by SHAMSUDEEN 13th February 2015, 5:06 PM
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CBSE - XI Science - Mathematics - Complex Numbers and Quadratic Equations

The arugument of -1-i 
is if not 3pi/4 .?? (Why)

Asked by Shubham Kumar 31st December 2014, 12:38 PM
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CBSE - XI Science - Mathematics - Complex Numbers and Quadratic Equations

Convert the complex number i-1/cos60+isin60 into polar form.

Asked by Shubham Kumar 9th November 2014, 10:13 AM
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CBSE - XI Science - Mathematics - Complex Numbers and Quadratic Equations

Find sum from k equals 1 to 6 of open parentheses sin fraction numerator 2 pi k over denominator 7 end fraction space minus space i space cos space fraction numerator 2 pi k over denominator 7 end fraction close parentheses
where i is complex number.
 

Asked by yashbbelkhedkar1 2nd October 2014, 7:05 PM
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