Posted by **Anonymous** on Thursday, October 14, 2010 at 11:16pm.

The question is:

Fr what value(s) of k will the function f(x)=(kx^2)-4x+k have no zeroes.

So for that, the discriminant would be less than 0.

0>D

0>((-4)^2)-4(k)(k)

0>16-(4k^2)

4k^2>16

k^2>4

k>+2/-2

So I know that I'm supposed to graph it with D as one axis an k as the other, and then shade the part of the graph that agrees with D<0, and use that to make the restrictions.

BUT I don't know whether the graph hs a minimum or maximum because I don't know the k value which is the a value that determines whether or not the graph has a minimum or maximum.

How do I finish this question?

Thanks.

## Answer this Question

## Related Questions

- algebra - What would be the discriminant for this equation: x^2-2x+12=0 How many...
- Math terminal zeroes - If a number ends in zeroes, the zeroes are called ...
- math - Find the zeroes of the function y=3x^3-3x So I factored that to y=3x(x^2-...
- Algebra- functions - How do I know how many possible zeroes of a function there ...
- Trigonometry - Help trig question involving discriminant? a)Find the value of ...
- Algebra - Find the discriminant and solutions for the following equations. #1) ...
- maths - For which values of a and b , are the zeroes of q(x)=x3+ 2x2+a also the...
- math - Can someone calculate the value of the discriminant of X^2+2x+1=0 I don't...
- Math!!!! - Determine the value(s) of 'K' that will give (k-1)x^2-5x + 10= 0 two ...
- JAD - For the following equation, state the value of the discriminant and then ...

More Related Questions