The real numbers a and b are such that the discriminant of the quadratic [f(x) = ax^2 - bx - 16]is less than or equal to 0. find the largest possible value of 4a - b.

The answer is 4.

Explanation:

When we put 4 instead of x, the equation will be:

Find the largest possible value of 4a - b is 4

answer; /// i believe that the correct answer is (c)

force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

                                              ⇒      

here   k is the proportionality constant whose value is 1.

                                                            [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.