# `mathematical - mathematisch`

 1/2 one half a half 2 1/2 two and a half 1/4 one quarter a quarter one fourth a fourth 75/100 seventy-five hundredths 0.45 point four five 2.5 two point five 7 + 8 = 15 seven plus eight is fifteen seven and eight is fifteen 9 - 4 = 5 nine minus four is five nine less four is five 2 · 3 = 6 twice three is six two times three equals six 20 ÷ 5 = 4 twenty divided by five is four 6⁄2 = 3 six over two equals three (a + b) + c = d a plus b in brackets plus c equals d 22 = 4 two squared equals four two to the power of two equals four 23 = 8 two cubed equals eight two to the power of three is eight √2 = 1.414... the square root of two is one point four one four ... sin θ sine theta cos θ cosin theta tan θ tangent theta sinh θ shine theta cosh θ coshin theta tanh θ thangent theta sin3 θ sine cubed theta sin θ3 sine theta cubed dy⁄dx dee y by dee x d2y / dx2 dee two y by dee x squared ∫2x dx = x2 the integral of two x dee x equals x squared 1⁄2a[-b ± √(b2 - 4ac)] minus b plus or minus the square root of b squared minus four ac in brackets all over two a -√2 ∫ √2  4 sin2θ3 dθ the integral from minus square root of two to square root of two of four sine squared theta cubed dee theta |Z(ω)| = √[R2 + (ωL - 1⁄ωC)2] the modulus of Z(ω) equals the square root of R squared plus in brackets omega L minus one over omega C all squared z = a + jb z = a + ib a = ℜ{z} = real part from z b = ℑ{z} = imaginary part from z

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