Sunday

April 20, 2014

April 20, 2014

Posted by **Rachel** on Tuesday, July 22, 2008 at 9:56pm.

- Help with Math -
**Dr Russ**, Wednesday, July 23, 2008 at 7:31amThis is similar ot the other problem.

If the equation crosses the x-axis then y=0.

So you need to find the solutions for

0=2x^2-2x+3k

using the general equation we get

x=-2+/-(4-4.2.3k)^.5/4

for there to be real values

4-24k>0 (we can't square root a number less than zero, and it can't equal zero as the question says there are two distinct points. Zero would give us two coincident points)

so 4>24k or k<4/24 k<0.1667

Check my working!

**Related Questions**

MATH HELP! - Help with any of these would be greatly appreciated! THANK YOU! 2. ...

Math help - Help with any of these would be greatly appreciated! THANK YOU! 1. ...

math - how many times does the graph of y= 2x squared -2x+3 intersect the x-axis...

can someone please help me? - simplify the following expressions involving ...

11th grade Algebra II - if the roots of ax^2+bx+c=0 are real, rational, and ...

math $$ - The graph of 5x-2y=10 intersects the x-axis and y-axis what are the ...

math $$ - The graph of 5x-2y=10 intersects the x-axis and y-axis what are the ...

Algebra - The formula is y=ax^2+bx+c I also gave the wrong problems, they are...

Math - For f(x) = 2x-3 and g(x)= 2x^2 find, a) (f + g)(x) = My answer is 2x^2 + ...

Math(Please, Please, help) - For f(x) = 2x-3 and g(x)= 2x^2 find, a) (f + g)(x...