𝜋 𝑟=( ) × 𝑑𝑒𝑔𝑟𝑒𝑒𝑠 180 𝑥 = cos ø 180 𝑑=( ) × 𝑟𝑎𝑑𝑖𝑎𝑛𝑠 𝜋 𝑦 = sin ø tan ø = 𝒚 = 𝐚𝐬𝐢𝐧 𝒃𝒙 + 𝒄 sin ø cos ø 𝒚 = 𝐚𝐜𝐨𝐬 𝒃𝒙 + 𝒄 𝑎 = 𝑎𝑚𝑝𝑙𝑖𝑡𝑢𝑑𝑒 2𝜋 = 𝑝𝑒𝑟𝑖𝑜𝑑 𝑏 𝑄1 ø = 𝑟𝑒𝑓𝑒𝑟𝑒𝑛𝑐𝑒 𝑎𝑛𝑔𝑙𝑒 𝑄2 ø = 180 − 𝑟𝑒𝑓𝑒𝑟𝑒𝑛𝑐𝑒 𝑎𝑛𝑔𝑙𝑒 𝑂𝑅 𝜋 − 𝑟𝑒𝑓𝑒𝑟𝑒𝑛𝑐𝑒 𝑎𝑛𝑔𝑙𝑒 𝑐 = 𝑚𝑒𝑎𝑛 𝑝𝑜𝑠𝑖𝑡𝑖𝑜𝑛 𝑄3 ø = 180 + 𝑟𝑒𝑓𝑒𝑟𝑒𝑛𝑐𝑒 𝑎𝑛𝑔𝑙𝑒 𝑂𝑅 𝜋 + 𝑟𝑒𝑓𝑒𝑟𝑒𝑛𝑐𝑒 𝑎𝑛𝑔𝑙𝑒 sin2 ø + cos 2 ø = 1 𝑄4 ø = 360 − 𝑟𝑒𝑓𝑒𝑟𝑒𝑛𝑐𝑒 𝑎𝑛𝑔𝑙𝑒 𝑂𝑅 2𝜋 − 𝑟𝑒𝑓𝑒𝑟𝑒𝑛𝑐𝑒 𝑎𝑛𝑔𝑙𝑒 𝒚 = 𝒂 𝐭𝐚𝐧 𝒃𝒙 + 𝒄 𝑝𝑒𝑟𝑖𝑜𝑑 = 𝑎𝑠𝑠𝑦𝑚𝑝𝑡𝑜𝑡𝑒𝑠 = 𝜋 𝑏 ( 2𝑘 + 1 𝜋) , 𝑘 −1,0,1,2 2𝑏 𝜋 sinShortcut ( − ø) = cos ø Turning Point 2 Quadratic Formula 𝜋 sin (Quadratic + ø) = cos ø Inequalities 2 𝜋 1. Solve equation 𝑦 = 𝑎𝑥 2 + 𝑏𝑥 +𝜋𝑐 → 𝑎 𝑥 − ℎ 2 + 𝑘 cos ( − ø) = sin ø cos ( + ø) = −sin ø 2 2 2. Draw graph 𝑎=𝑎 3. Use graph to find values suiting 𝑏 ℎ=− inequality 2𝑎 Discriminant ∆= 𝑏 2 − 4𝑎𝑐 < 0 No solutions = 0 One solution > 0, perfect square 2x rational > 0, x perfect square 2x irrational Rectangular Hyperbola 𝑦= 𝑎 +𝑘 𝑥−ℎ Truncus Square Root Function 𝑦= 𝑎 +𝑘 𝑥−ℎ 2 𝑦 = 𝑎√𝑥 − ℎ + 𝑘 𝑎 + 𝑏 3 = 𝑎3 + 3𝑎2 𝑏 + 3𝑎𝑏 2 + 𝑏 3 𝑎 + 𝑏 4 = 𝑎4 + 4𝑎3 𝑏 + 6𝑎2 𝑏 2 + 4𝑎𝑏 3 + 𝑏 4 Cubic Function of form: 𝑦 =𝑎 𝑥−ℎ 3+𝑘 Point of Inflection: Index Laws 𝑎𝑚 × 𝑎𝑛 = 𝑎𝑚+𝑛 𝑎𝑚 ÷ 𝑎𝑛 = 𝑎𝑚−𝑛 𝑎−𝑛 = 1 𝑎𝑛 𝑎𝑚 𝑛 = 𝑎𝑚×𝑛 𝑎𝑏 𝑚 = 𝑎𝑚 × 𝑏 𝑚 𝑚 𝑛 𝑎 𝑛 = √𝑎𝑚 𝑎0 = 1 Prime Decomposition Make all bases prime (when can) before further calculations. 12𝑛 × 18−2𝑛 3 × 22 𝑛 × 32 × 2 −2𝑛 = 1 33𝑛 Base Rule – make bases same before solving Graphs of Exponentials 𝑦 = 𝑎 𝑥−ℎ + 𝑘 Dilations: Multiplying a by dilation factor dilates from x axis Multiplying x by dilation factor dilated from y axis Reflections: Multiplying a by -1 reflects in x axis Multiplying x by -1 reflects in y axis Translations: Translated h (flip sign) units horizontal and k units vertical Log Laws 𝑎 𝑥 = 𝑦 = log 𝑎 𝑦 = 𝑥 log 𝑎 𝑚 + log 𝑎 𝑛 = log 𝑎 𝑚 × 𝑛 log 𝑎 𝑚 − log 𝑎 𝑛 = log 𝑎 𝑚 ÷ 𝑛 log 𝑎 𝑚𝑝 = 𝑝 log 𝑎 𝑚 log 𝑎 𝑎 = 1 log 𝑎 1 = 0 Log Solving Rule log 𝑏 𝑐 = log 𝑎 𝑐 log 𝑎 𝑏 …where a is any base Log Graphs 𝑦 = log 𝑎 𝑥 − ℎ + 𝑘 Dilations: Multiplying log by dilation factor dilates away from x axis Multiplying x by dilation factor of a dilates by 1/a away from y axis Reflections: Multiplying log by -1 reflects in x axis First Principles Differentiation 𝑓 𝑥+ℎ −𝑓 𝑥 ℎ→0 ℎ 𝑓 ′ 𝑥 = lim 𝑓 𝑥 = 𝑥 𝑛 , 𝑓 ′ 𝑥 = 𝑛𝑥 𝑛−1 Solves to find instantaneous rate of change (gradient at a point) for a graph, when coordinates subbed into derivative… Finding point where tangent makes ø angle… 𝑚 = tan ø = 𝑜𝑝𝑝𝑜𝑠𝑖𝑡𝑒 𝑟𝑖𝑠𝑒 = 𝑎𝑑𝑗𝑎𝑐𝑒𝑛𝑡 𝑟𝑢𝑛 1. Solve for ø to find the gradient 2. Take gradient and make equal derivative 3. Sub x coordinate found from derivative into original equation to find y coordinate Antidifferentiation 𝑥 𝑛 𝑑𝑥 = 𝑥 𝑛+1 +𝑐 𝑛+1 Finds the original equation. Limits lim 𝑓 𝑥 𝑥→𝑎 Always factorise first! Sub a into x to solve once factorised. Function is differentiable if f(x) is continuous at this point, and a tangent can be drawn at the point (the point is not an endpoint or cusp). Tangent Line (CAS): Menu 4 9 Normal Line (CAS): Menu 4 A Absolute Maximum Maximum value of function over given domain. May not be a stationary point, may be an endpoint of domain. Absolute Minimum Minimum value of function over given domain. May not be a stationary point, may be an endpoint of domain. Stationary Points Probability Equations Independent Events Pr 𝐴′ = 1 − Pr 𝐴 Events are independent if: Pr 𝐴 ∪ 𝐵 = Pr 𝐴 + Pr 𝐵 − Pr 𝐴 ∩ 𝐵 Pr 𝐴 ∩ 𝐵 = Pr 𝐴 × Pr 𝐵 Pr 𝐴|𝐵 = Pr 𝐴 ∩ 𝐵 Pr 𝐵 Pr A|B = Pr A Pr B|A = Pr B Pr 𝐴 ∩ 𝐵 = Pr 𝐴|𝐵 × Pr 𝐵 Pr 𝐴 = Pr 𝐴|𝐵 × Pr 𝐵 + Pr 𝐴|𝐵′ × Pr 𝐵′ CAS binomPDF – Menu 5 5 A The probability of getting _ (can be blank for distribution table) successes where probability of success is _ and number of trials is _. binomCDF – Menu 5 5 B The probability of getting _ , _ or _ successes where probability of success is _ and number of trials is _, with lower and upper bounds included. Is a subset of (within or eqaual to)