Tính đạo hàm của hàm số: y=x³+2x²+3x-1

Can you me find the missing length. i attached an image.

Which equation represents h for right triangle abc

Identify all the cases where non-probability sampling is used when attempting to study the characteristics of a large city. studies on every subject in the population divide a population in groups and obtain a sample studies with a limited amount of time demonstrate existing traits in a population studies with the nth person selected