Question : basic question about graphs and gradients

Hi

Here is the question:

draw a diagram to show there are 2 tangent lines to the curve y = x^2 that pass through (0,-4). Find the coordinates of where these tangent lines intersect the parabola.

I'm sure i should be able to do this without just looking at the graph but I can't as I don't know the gradient of the tangent lines. All i know is that their equation is y = mx - 4

I can't find out where mx - 4 = x^2 (the intersection) as I have 2 unknowns. What am i missing?

thanks

Answer : basic question about graphs and gradients

Do you have the CONVERT NULL DATES TO DEFAULT option set?

Open the report
Click FILE --> REPORT OPTIONS
Is the option CONVERT DATABASE VALUES TO DEFAULT checked?

Is the database actually returning that date?

You could also suppress the value with a formula
Right click the field
Click FORMAT FIELD
Click the COMMON TAB
Click the FORMULA BUTTON to the right of suppress
{YourField} = Date(1900,1,1)

mlmcc