Download PDF by Alan Davies; Diane Crann;: A Handbook of Essential Mathematical Formulae

By Alan Davies; Diane Crann;

ISBN-10: 1902806417

ISBN-13: 9781902806419

Meant for college students of arithmetic in addition to of engineering, actual technological know-how, economics, company reviews, and laptop technology, this instruction manual comprises very important info and formulation for algebra, geometry, calculus, numerical tools, and facts. accomplished tables of ordinary derivatives and integrals, including the tables of Laplace, Fourier, and Z transforms are integrated. A spiral binding that permits the instruction manual to put flat for simple reference complements the elementary layout.

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E. y′ = f(x, y) ... 6 Y0 = y 0 Systems of linear equations, n × n a11 x1 + a21 x1 + .. a12 x2 + . . + a22 x2 + . . + .. a1n xn = b1 a2n xn = b2 .. . an1 x1 + an2 x2 + . . + ann xn = bn in matrix form Ax=b Direct method Gauss elimination, with partial pivoting Computational procedure, (k = 1 . . (n − 1)): 1. Rearrange the equations so that |akk | ≥ |aik |, i = (k + 1)(1)n 2. Compute µik = −aik /akk , i = (k + 1) . . n 3. Compute a′ij = aij + µik akj , b′i = bi + µik bk j = (k + 1) . . n 55 4.

1 Interpolation Polynomial interpolation: Suppose that f is defined on the interval −1 ≤ x ≤ 1 with n + 1 continuous derivatives. If the n-degree polynomial approximation at the n+1 points x0 , x1 , . . , xn is given by pn (x) then the error at any point x ∈ (−1, 1) is given by f (x) − pn (x) = (x − x0 )(x − x1 ) . . (x − xn ) (n+1) f (ξ) for some ξ ∈ (−1, 1) (n + 1)! Lagrange interpolation polynomials Li (x) = (x − x0 )(x − x1 ) . . (x − xi−1 )(x − xi+1 ) . . (x − xn ) (xi − x0 )(xi − x1 ) .

Fn−1 )} The error, ǫn , is bounded as follows: |ǫn | ≤ (b − a) h2 M1 , where M1 = max |f ′′ (x)| 12 x∈[a,b] Simpson’s rule (n must be even) b a f (x)dx ≈ h {f0 + fn + 4(f1 + f3 + . . + fn−1 ) + 2(f2 + f4 + . . 17132 44923 79170 The xi are the positive zeros of the Legendre polynomial Pn (x). The formula integrates exactly all polynomials of degree 2n − 1. 5 Numerical solution of ordinary differential equations First order equations y ′ = f (x, y) with y(x0 ) = y0 The equation is solved successively at discrete points x1 , x2 , x3 , .

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A Handbook of Essential Mathematical Formulae by Alan Davies; Diane Crann;


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