Find the value of given equations in polynomial , Mathematics

Assignment Help:

If α & ß are the zeroes of the polynomial 2x2 - 4x + 5, then find the value of a.α2 + ß2  b. 1/ α + 1/ ß  c. (α - ß)2 d. 1/α2 + 1/ß2   e.  α3 + ß3 (Ans:-1, 4/5 ,-6, - 4/25 ,-7)

Ans: Let p(x) = 2x2 - 4x +5

α+β = - b/a = 4/2 = 2

αβ = c/a = 5/2

a)  α22 = (α+β)2 - 2αβ

Substitute to get = α22 = -1

b) 1/a + 1/β = α + β/αβ

substitute , then we get = 1/a + 1/β  = 4/5

b)  (α-β)2  = (α+β)2  - 4 αβ

Therefore we get, (α-β)2 = - 6

d)   1/α 2  +  1/β 2 = α 2  + β 2/ αβ 2 =  - 1/(5/2)2

∴   1/α 2  +  1/ β 2  = - 4/25

e)  α33  = (α+β)(α22 - αβ)

Substitute this,

to get, α33 = -7


Related Discussions:- Find the value of given equations in polynomial

Finance, Determine the value of a $1800 investment after six years at 9.3% ...

Determine the value of a $1800 investment after six years at 9.3% per year, simple interest

Show that p ( x ) = 2 x3 - 5x2 -10 x + 5 intermediate value , Example   Sh...

Example   Show that p ( x ) = 2 x 3 - 5x 2 -10 x + 5 has a root somewhere in the interval [-1,2]. Solution What we're actually asking here is whether or not the function wi

Inverse of a matrix, Explain Inverse of a matrix, need assignment help.

Explain Inverse of a matrix, need assignment help.

Math, could you help me get bater at math

could you help me get bater at math

Compute the regular expression, 1. Consider the following context free gram...

1. Consider the following context free grammar G with start symbol S (we write E for the empty string, epsilon): S ---> bB | aSS A ---> aB | bAA B ---> E | bA | aS a. D

Finite difference method, Two reservoirs of equal cross sectional areas (31...

Two reservoirs of equal cross sectional areas (315 m 2 ) and at equal elevations are connected by a pipe of length 20 m and cross sectional area 3 m 2 . The reservoir on the left (

Variation, If p=10 when q=2,find p when q=5

If p=10 when q=2,find p when q=5

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd