Find the second derivative y= x^2lnx

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

How do you use the elimination method for this question? explain, because i really want to understand!

Formulate the indicated conclusion in nontechnical terms. be sure to address the original claim. the foundation chair for a hospital claims that the mean number of filled overnight beds is over 523, and she is therefore justified starting a funding campaign to add a wing to the hospital. assuming that a hypothesis test has been conducted and that the conclusion is failure to reject the null hypothesis, state the conclusion in nontechnical terms.