Left-&Right-Handed Limits Explained: What Do 150 & 300 mg Mean?

[bigplanet401]

Homework Statement

See attached image.

Homework Equations

Left- and right-handed limits.

The Attempt at a Solution

I know lt (t -> 12-) f = 150 mg and lt (t -> 12+) f = 300 mg, but I don't know how to explain these numbers. I'm assuming that measurements are taken and that this graph is from these measurements. But then why can't we say f(0) = 150 mg? Does this mean that a measurement is taken "a short time after" the drug is given? Thanks for any help.

 

[Mark44]

Homework Statement

See attached image.

Homework Equations

Left- and right-handed limits.

The Attempt at a Solution

I know lt (t -> 12-) f = 150 mg and lt (t -> 12+) f = 300 mg, but I don't know how to explain these numbers. I'm assuming that measurements are taken and that this graph is from these measurements. But then why can't we say f(0) = 150 mg?

Don't you mean f(12)?

Does this mean that a measurement is taken "a short time after" the drug is given? Thanks for any help.

It seems that a measurement is made right at t = 12.

 

[bigplanet401]

Forgot to post image...sorry. Please see top post.

 

[Mark44]

Now that I can see the image, it looks like measurements are made just after 4, 8, 12, and 16 hours.