Compute ∆y/∆x for the interval [2,6], where y = 4x − 7. What is the instantaneous rate of change of y with respect to x at x = 2?

Me find the value of x each figure.

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) = .

You have 138.72 in your saving account u take out 45.23 and 18.00 you deposit 75.85 into your account