Nancy has 5 pounds of jelly beans to divide into bags for her grandchildren. if she puts 1/4 pound of jelly beans in each bag, how many bags can she make?

Find dy/dx using implicit differentiation ln(20+e^xy)=y

Prove (a) cosh2(x) − sinh2(x) = 1 and (b) 1 − tanh 2(x) = sech 2(x). solution (a) cosh2(x) − sinh2(x) = ex + e−x 2 2 − 2 = e2x + 2 + e−2x 4 − = 4 = . (b) we start with the identity proved in part (a): cosh2(x) − sinh2(x) = 1. if we divide both sides by cosh2(x), we get 1 − sinh2(x) cosh2(x) = 1 or 1 − tanh 2(x) = .

What is the value of the expression i 0 × i 1 × i 2 × i 3 × i 4? 1 –1 i –i