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The analytical formula of ∴ parabola is y = ax2-2ax-3 (a > 0).

Let m be the MN⊥y axis in n and connect CM, then MN= 1 and CM=5.

∴CN=2, so m =- 1.

B (3 3,0) can be obtained in the same way.

∴a×32-2a×3-3=0 and a = 1.

The analytical formula of parabola is y = x2-2x-3.

(2) A (-1, 0), E (1, 4), B (3 3,0), C (0 0,3) from (1).

∫ the distance from m to AB and CD is equal, OB=OC,

∴OA=OD，

The coordinate of point ∴d is (0, 1),

∴ in Rt△BCO, BC=OB2+OC2=32,

∴OBOD=3 1=3，

In △BCE, ∫ BC2+Ce2 = (32+32)+[(1-0) 2+(-4+3) 2] = 20 = (3-1) 2+(0+4) 2 =

∴△BCE is Rt△

BCCE=322=3，

∴OBOD=BCCE，

That is OBBC=ODCE,

∴Rt△BOD∽Rt△BCE，get ∠CBE=∠OBD=β

So SIN (α-β) = SIN (∠ DBC-∠ OBD) = SIN ∠ OBC = COBC = I have praised it and stepped on it. What's your comment on this answer? Put away the comments: If your problem has not been solved, please describe your problem in detail and provide free professional consultation through Baidu Legal Pro. Other similar problems 2022- 10-25 as shown in the figure, the parabola y=ax2-2ax+c intersects with the X axis at point A (3,0) and with the Y axis at point B (0,4). 20 12- 12-30 is known: as shown in the figure, the parabola y=ax2-2ax+c(a≠0) intersects with the y axis at point c (0,4),162012-/. It is known that it intersects with the X axis at points A and B 52012-1kloc-0/:As shown in the figure, the parabola y = AX2+3ax+c (A > 0) intersects with the Y axis at point C, intersects with the X axis at points A and B, and point A remains at point B 8206544. Parabola y = ax 2-2ax+c (a ≠ 0) intersects with Y axis at point C (0,4), and intersects with X axis at points A and B. The coordinates of point A are (4,0)172012-12-. AB = 4382011-19 It is known that the parabola y=ax2-4ax+c intersects the Y axis at point A (0,3), and point B is a point on the parabola, which satisfies A9201. & gt Recommended for you: Why is the cost of cancer treatment getting higher and higher? What impact will the "network toilet" have? The price of electric cars has dropped many times. Is the quality guaranteed? Is Huaqiang North's second-hand mobile phone reliable? Baidu legal pro-free legal service recommends super 3w professional lawyers, 24-hour online service, with an average of 3 minutes to reply to free appointments. Online lawyers guide professional lawyers to complete one-on-one communication at any time, waiting for your answer? Change and help more people? Download Baidu Know APP and grab a fresh experience. Know the APP with Baidu and grab a fresh experience immediately. There may be answers that others want to know in the camera of your mobile phone. Scan QR code to download illegal and harmful information about personal and corporate infringement complaints. Please select and submit a category below.

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