1. Consider the circle to the right,

Part A: Determine mzSBE.

Part B: Determine mob.

S

52

B

Y=(x+3)(x-4)(x+1)^2 sulutions? multiplicity?

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) = .

The sum of these consecutive integers is equal to 9 less than 4 times the least of the integer. find the three integers