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FAQs

What is the graphical method of solving a pair of linear equations?

The graphical method involves plotting each equation on a graph as a line and finding the point(s) of intersection. The coordinates of the intersection point represent the solution to the equations. If the lines intersect at a single point, there is a unique solution. If they are parallel, there is no solution, and if they coincide, there are infinitely many solutions.

What is the graphical method of solving a pair of linear equations?2024-11-26T16:40:13+05:30

Why doesn’t a parabola always intersect the x-axis?

If the quadratic polynomial’s discriminant D = b² - 4ac is less than zero, the polynomial has no real roots, so the parabola does not intersect the x-axis.

Why doesn’t a parabola always intersect the x-axis?2024-11-26T16:22:34+05:30

What are some practical applications of the relationship between zeroes and coefficients?

This concept is widely used in algebra, calculus, and even fields like physics and engineering. For example, in circuit analysis, certain electrical parameters can be modeled using polynomial equations, and understanding the relationships between zeroes and coefficients can help solve complex problems efficiently.

What are some practical applications of the relationship between zeroes and coefficients?2024-11-26T13:28:32+05:30

How does this concept apply to higher-degree polynomials?

For higher-degree polynomials (beyond cubic), similar relationships exist. The sum of zeroes, the sum of products of zeroes taken two at a time, and so on, can be related to the coefficients. However, the exact relationships depend on the polynomial's degree and are more complex as the degree increases.

How does this concept apply to higher-degree polynomials?2024-11-26T13:28:14+05:30

Can this relationship be used to construct a polynomial if we know its zeroes?

Yes, knowing the zeroes and their relationships with the coefficients allows us to construct polynomials. For example, if the zeroes of a quadratic polynomial are given as α and β, we can write it as: p(x) = a(x - α)(x - β) Expanding this will provide a polynomial with the desired zeroes.

Can this relationship be used to construct a polynomial if we know its zeroes?2024-11-26T13:27:57+05:30

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