Finding zeroes of a polynomial, Algebra

Assignment Help:

Finding Zeroes of a polynomial

The below given fact will also be useful on occasion in determining the zeroes of a polynomial.

Fact

If P (x) is a polynomial & we know that P (a) = 0 and P (b) = 0 then somewhere among a and b is a zero of P ( x ) .

According to this fact if we evaluate the polynomial at two points & one of the evaluations provides a positive value (that means the point is above the x-axis) & the other evaluation provides a negative value (that means the point is below the x-axis), then the single way to get from one point to the other is to go through the x-axis. Or, in other terms, the polynomial ought to have a zero, as we know that zeroes are where a graph touches or crosses the x-axis.

Notice that this fact doesn't tell us what the zero is, it just tells us that one will present.  Also, note that if both of the evaluations are +ve or both evaluations are -ve there may or may not be a zero among them.


Related Discussions:- Finding zeroes of a polynomial

Example of equations with radicals, Solve x =√(x+ 6) . Solution In ...

Solve x =√(x+ 6) . Solution In this equation the fundamental problem is the square root.  If it weren't there we could do the problem.  The whole procedure that we're going

Construct a decision tree example, Consider the following game. A player ro...

Consider the following game. A player rolls two dice. If the outcome on both dice is the same (doubles), the player wins $5. If the sum is 7 or 11, the player wins $3. If neither o

Rectangular or cartesian coordinate system, Rectangular or Cartesian coordi...

Rectangular or Cartesian coordinate system We will begin with the Rectangular or Cartesian coordinate system.  It is just the standard axis system that we employ when sketching

Elevation, A v\certain mountain had an elevation of 19,063 ft. In 1911 the ...

A v\certain mountain had an elevation of 19,063 ft. In 1911 the glacier on this peek covered 8 acres. by 2000 this glacier had melted to only 1 acre. what is the yearly rate of ch

One-to-one function, A function is called one-to-one if no two values of x ...

A function is called one-to-one if no two values of x produce the same y. It is a fairly simple definition of one-to-one although it takes an instance of a function which isn't one

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