25a and 25bthx

25. For each function below, identify the value of & that makes the function continuous: x2+2x-15 (a) f : R -+ R given by f(x) = x-3 x 2. 2e3x * (c) f : R -+ R given by f(x) = x 0. 26. If they exist, evaluate the following asymptotic limits: [2726 + 24x-17-51 * (a) limr-too 9726_27217-5 ] " * (b) lime--co - xsin (5x) ], (c) limy-too e-2yT tanh(4y) for x > 0