English

If the Sum of the Zeros of the Quadratic Polynomial F(X) = Kx2 − 3x + 5 is 1, Write the Value of K. - Mathematics

Advertisements
Advertisements

Question

If the sum of the zeros of the quadratic polynomial f(x) = kx2 − 3x + 5 is 1, write the value of k.

Short Note

Solution

We have to find the value of k, if the sum of the zeros of the quadratic polynomial  f(x) = kx2 − 3x + 5 is 1 is 1

Given

Sum of the polynomial = 1 

`(-text{Cofficient of x})/(text{Cofficient of }x^2)=1`

`-((-3)/k)=1`

`3 =1xxk`

`3 = k`

Hence, the value of k is = 3

shaalaa.com
  Is there an error in this question or solution?
Chapter 2: Polynomials - Exercise 2.4 [Page 58]

APPEARS IN

RD Sharma Mathematics [English] Class 10
Chapter 2 Polynomials
Exercise 2.4 | Q 11 | Page 58

Video TutorialsVIEW ALL [2]

RELATED QUESTIONS

A plane left 30 minutes late than its scheduled time and in order to reach the destination 1500 km away in time, it had to increase its speed by 100 km/h from the usual speed. Find its usual speed.


In Q. No. 14, write the sign of c.


If f(x) is a polynomial such that f(af(b) < 0, then what is the number of zeros lying between a and b?


Which of the following is a polynomial?


Identify the following expression is polynomial. If not give reason:

 x2(x – 1)


An asana is a body posture, originally and still a general term for a sitting meditation pose, and later extended in hatha yoga and modern yoga as exercise, to any type of pose or position, adding reclining, standing, inverted, twisting, and balancing poses. In the figure, one can observe that poses can be related to representation of quadratic polynomial.

In the graph, how many zeroes are there for the polynomial?


Basketball and soccer are played with a spherical ball. Even though an athlete dribbles the ball in both sports, a basketball player uses his hands and a soccer player uses his feet. Usually, soccer is played outdoors on a large field and basketball is played indoor on a court made out of wood. The projectile (path traced) of soccer ball and basketball are in the form of parabola representing quadratic polynomial.

The graph of parabola opens upwards, if:


Basketball and soccer are played with a spherical ball. Even though an athlete dribbles the ball in both sports, a basketball player uses his hands and a soccer player uses his feet. Usually, soccer is played outdoors on a large field and basketball is played indoor on a court made out of wood. The projectile (path traced) of soccer ball and basketball are in the form of parabola representing quadratic polynomial.

Observe the following graph and answer.

In the above graph, how many zeroes are there for the polynomial?


Basketball and soccer are played with a spherical ball. Even though an athlete dribbles the ball in both sports, a basketball player uses his hands and a soccer player uses his feet. Usually, soccer is played outdoors on a large field and basketball is played indoor on a court made out of wood. The projectile (path traced) of soccer ball and basketball are in the form of parabola representing quadratic polynomial.

The three zeroes in the below shown graph are:


Classify the following as a constant, linear, quadratic and cubic polynomials:

4 – 5y2 


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×