2 2 2 2

Simplifying Rational Exponents

2 3 y 3 2 ⋅ 3y 1 2 x 2 3 y 1 4 4y2 17) (m ⋅ m−2n 5 3) 2 n 10 3 m2 18) (a−1b 1 3 ⋅ a − 4 3 b2) 2 a 1 3 b 14 3 a5 19) (x 1 2 y−2 yx − 7 4) 4 x9 y12 20) (x3 y2) 3 2 (x−1 y − 2 3) 1 4 y 19 6 x 19 4 21) (x − 1 2 y2) − 5 4 x2 y 1 2 x 5 8 y3x2 22) (x − 1 2 y4) 1 4 x 2 3 y 3 2 ⋅ …

Lecture 2 Models of Continuous Time Signals

Cu (Lecture 2) ELE 301: Signals and Systems Fall 2011-12 3 / 70 The period of the sinuoid is T = 1 f = 2ˇ! with the units of seconds. The phase or phase angle of the signal is , given in radians. t-2T -T T 2T 0 cos(!t)-2T -T T 2T 0 t cos(!t!") Cu (Lecture 2) …

  Model, Time, Continuous, 2 models of continuous time