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14-2 Translations and Reflections (day 2). What have we learned so far about Trig. Functions?. For graphs of y = asin ( bx ), and y = acos ( bx ) :. For the graph of y = atan ( bx ):. We will now move the graph! (up/down, or side-to-side). General Forms:
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What have we learned so far about Trig. Functions? For graphs of y = asin(bx), and y = acos(bx) : For the graph of y = atan (bx):
We will now move the graph!(up/down, or side-to-side) General Forms: y = asin b(x-h)+k, y = acos b(x-h)+k : Vertical Shift (up/down): k Horizontal Shift (side-to-side): h *Goes in the opposite direction of what you think!
Ex 1: Graph the function. The easiest way to graph is to graph the points you know, then shift those points. Start by labeling what you’re given. a = 1 b = 2 3 k = 2 brings the graph up 2 units. - 3
Ex 2: Graph the function. 3 a = 3 b = ½ - 3 k = -4 brings the graph down 4 units. - 7 The negative (-) in front of the 3 flips the cosine graph upside down.
Ex 3: Graph the function y = - ¼ tan π(x-1) a = ¼ b = π h = -4 brings the graph to the right 1 unit ¼ The negative (-) in front of the ¼ flips the graph upside down. - ¼