V I Resourcing Ltd User Guide – Accessible PDFs Alt text for GCE Mathematics ___________________________________________________________________ Copyright V I Resourcing Ltd 2015 Manual prepared for the use of V I Resourcing Ltd. V5 This work is licensed under the Creative Commons Attribution 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ or send a letter to Creative Commons, PO Box 1866, Mountain View, CA 94042, USA. GCE Trigonometry Example Alt Text sinh hyperbolic sine Cosh hyperbolic cosine Tanh hyperbolic tangent Sech hyperbolic secant Cosech hyperbolic cosecant Cotanh hyperbolic cotangent Artanh inverse of hyperbolic tangent sech2x = 1 – tanh2x hyperbolic secant squared of x equals 1 minus hyperbolic tangent squared of x sinhx hyperbolic sine of x Copyright V I Resourcing Ltd 2015 Notes V5 This work is licensed under the Creative Commons Attribution 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ or send a letter to Creative Commons, PO Box 1866, Mountain View, CA 94042, USA. Sets Example Alt Text ℕ the set of natural numbers ℤ the set of integers ℤ+ the set of positive integers ℚ the set of rational numbers ℝ the set of real numbers p, r ∈ ℝ p and r are elements of the set of real numbers n∈ ℤ+ n is a member the set of positive integers Var(X) The variance of upper case x Var(x) The variance of lower case x Var(3 – 4x) the variance of left parenthesis, 3 minus 4x, right parenthesis. 𝚫 = b2 + 4ac The discriminant is equal to … 𝚫 delta r.(i – 2j – k) = 3 The dot product of vector r and vector, left parenthesis, i – 2j – k, right parenthesis is equal to 3. Copyright V I Resourcing Ltd 2015 Notes V5 This work is licensed under the Creative Commons Attribution 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ or send a letter to Creative Commons, PO Box 1866, Mountain View, CA 94042, USA. Example 𝑑𝑟 𝑑𝑡 -t + r = ti + e j Alt Text Notes dr by dt plus r = ti plus e to the minus t, j, where r i and j are vectors pause between t and j. a1 a, one or a1 an+1 a, n+1 pause between a and n+1. z1 z2 z, 1. z, 2 Pause after z Q1 Q, 1 Pause after Q Sxx uppercase S, xx Pause after S z1 = p + 2i z, 1 equals p plus 2i y=|𝑎 + 𝑏| y = modulus of, a + b C-1 C inverse ... Ellipsis or dot dot dot Copyright V I Resourcing Ltd 2015 pause before a + b V5 This work is licensed under the Creative Commons Attribution 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ or send a letter to Creative Commons, PO Box 1866, Mountain View, CA 94042, USA. Matrices Example Alt Text 1 2 A = (3 −4) 4 5 A is the 3 by 2 matrix whose first row is 1, [pause] 2, whose second row is 3, [pause] -4 and whose third row is 4, [pause] 5. y = |𝑓(𝑥)| y equals the modulus of, f of x y = |𝑎 + 𝑏| y equals the modulus of, a +b g-1(a) g inverse of a f -1(x) f inverse of x 2𝑥 9 f(x) 0≤ x≤ 1 2 9 1< x < 4 2 𝑥 −9 3 4≤ x≤ 6 0 otherwise (8x3 + 4)dx Copyright V I Resourcing Ltd 2015 Notes 3 by 2 means 3 rows by 2 columns – always give rows first pause before a + b Lower case f of x equals 2x over 9 when zero is less than or equal to x, is less than or equal to 1. Lower case f of x is equal to 2 over 9 when 1 is less than x, is less than 4. Lower case f of x is equal to 2 over 3 minus x over 9 when 4 is less than or equal to x, is less than or equal to 6. In PURE MATHS units this can be pronounced as f of x but in STATISTICS the case (lower case f of x, or upper case F of x) should be specified since the two can represent two distinct but related functions. left parenthesis, 8 x cubed + 4, right parenthesis d x say d x with a very slight separation between and use parentheses V5 This work is licensed under the Creative Commons Attribution 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ or send a letter to Creative Commons, PO Box 1866, Mountain View, CA 94042, USA. Functions Example Alt Text Notes f(x) f of x No parenthesis f ’(x) f dash of x No parenthesis f ’’ f double dash f:x ↦ 2x + 1 f of x = 2x + 1 log2 log base 2 log2x or log2(x) log base 2, of x logey log base e of y 𝑎− 𝑏+𝑐 𝑑−𝑒 ×𝑓 2ln(2x +1) – 10 𝑑𝑃 𝑑𝑡 𝑑2𝑣 𝑑𝜃2 Type I error Type II error a minus, start fraction b + c over d minus e end fraction, multiplied by f. log base 2 runs together then a pause before of x log base e runs together then a pause before of y b plus c and d minus e no pausing said as 2LN dp by dt d2v by d theeta squared type one error type two error ˄µ 1 µ, 1 hat 𝑥̅ x bar Copyright V I Resourcing Ltd 2015 Runs together µ is pronounced myou V5 This work is licensed under the Creative Commons Attribution 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ or send a letter to Creative Commons, PO Box 1866, Mountain View, CA 94042, USA. Example Alt Text Notes 20 sigma from i = 1 to 20 of [whatever comes after] ∑ 𝑖=1 ∑ 𝑓𝑥 2 sigma f x squared Integral is equivalent to Read numbers from bottom to top. Greek Letters Letter Greek Letter Name Alt text α Alpha Alpha β Beta Beta γ Gamma Gamma δ Delta Delta ε Epsilon Epsilon ζ Zeta Zeeta η Eta Eeta θ Theta Theeta Copyright V I Resourcing Ltd 2015 V5 This work is licensed under the Creative Commons Attribution 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ or send a letter to Creative Commons, PO Box 1866, Mountain View, CA 94042, USA. ι Iota Iota κ Kappa Kappa λ Lambda Lambda μ Mu Myou ν Nu Nyou ξ Xi Ksigh ο Omicron Ohmickron (emphasis on Oh) π Pi Pie ρ Rho Row σ Sigma Sigma τ Tau Tow (as now) υ Upsilon Upsilon φ Phi Figh χ Chi Kigh ψ Psi Psigh ω Omega Ohmega (emphasis on Oh) Copyright V I Resourcing Ltd 2015 V5 This work is licensed under the Creative Commons Attribution 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ or send a letter to Creative Commons, PO Box 1866, Mountain View, CA 94042, USA.