Advanced Mathematical Methods for Scientists and Engineers Episode 2 Part 4 ppsx

Advanced Mathematical Methods for Scientists and Engineers Episode 2 Part 4 ppsx

Advanced Mathematical Methods for Scientists and Engineers Episode 2 Part 4 ppsx

... z z 3  z=−ı + 2 2!  d 2 dz 2 (z 3 + z + ı) sin z z + ı  z=0 = 2 (−ı sinh(1)) + ıπ  2  3z 2 + 1 z + ı − z 3 + z + ı (z + ı) 2  cos z +  6z z + ı − 2( 3z 2 + 1) (z + ı) 2 + 2( z 3 + z + ı) (z ... formula.  C z z 2 + 1 dz =  C 1 /2 z −ı dz +  C 1 /2 z + ı dz = 1 2 2 + 1 2 2 = 2 3.  C z 2 + 1 z dz =  C  z + 1 z  dz =  C z dz +  C 1 z dz = 0 + 2 = 2...
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Advanced Mathematical Methods for Scientists and Engineers Episode 1 Part 4 pptx

Advanced Mathematical Methods for Scientists and Engineers Episode 1 Part 4 pptx

... cos x  = 0 2 = 0 lim x→0  csc x − 1 x  = 0 109 Solution 3.15 a. f  (x) = ( 12 −2x) 2 + 2x( 12 − 2x)( 2) = 4( x −6) 2 + 8x(x − 6) = 12( x 2) (x − 6) There are critical points at x = 2 and x = 6. f  (x) ... 6. f  (x) = 12( x 2) + 12( x − 6) = 24 (x 4) Since f  (2) = 48 < 0, x = 2 is a local maximum. Since f  (6) = 48 > 0, x = 6 is a local minimum. b. f  (x...
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Advanced Mathematical Methods for Scientists and Engineers Episode 2 Part 1 pps

Advanced Mathematical Methods for Scientists and Engineers Episode 2 Part 1 pps

... ations are u x = v y and u y = −v x −(x − 1) 2 + y 2 ((x − 1) 2 + y 2 ) 2 = −(x − 1) 2 + y 2 ((x − 1) 2 + y 2 ) 2 and 2( x − 1)y ((x − 1) 2 + y 2 ) 2 = 2( x − 1)y ((x − 1) 2 + y 2 ) 2 The Cauchy-Riemann ... 8 .4. 3 1/ sin (z 2 ) has a second order pole at z = 0 and first order poles at z = (nπ) 1 /2 , n ∈ Z ± . lim z→0 z 2 sin (z 2 ) = lim z→0 2z...
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Advanced Mathematical Methods for Scientists and Engineers Episode 2 Part 2 pptx

Advanced Mathematical Methods for Scientists and Engineers Episode 2 Part 2 pptx

... = 1 2 Log  x 2 + y 2  + ı Arctan(x, y). 4 52 2. We calculate the first partial derivatives of u and v. u x = 2 e x 2 −y 2 (x cos(2xy) − y sin(2xy)) u y = 2 e x 2 −y 2 (y cos(2xy) + x sin(2xy)) v x = ... x direction. f  (z) = u x + ıv x f  (z) = 2 e x 2 −y 2 (x cos(2xy) − y sin(2xy)) + 2 e x 2 −y 2 (y cos(2xy) + x sin(2xy)) f  (z) = 2 e x 2 −y 2 ((x +...
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Advanced Mathematical Methods for Scientists and Engineers Episode 2 Part 3 ppt

Advanced Mathematical Methods for Scientists and Engineers Episode 2 Part 3 ppt

... axis and is defined continuously on the real axis.) Hint, Solution 48 1      C Log z dz     ≤  C |Log z||dz| =  π /2 −π /2 |ln 2 + ıθ |2 dθ ≤ 2  π /2 −π /2 (ln 2 + |θ|) dθ = 4  π /2 0 (ln 2 ... =  2 0 e ınθ ı e ıθ dθ =     e ı(n+1)θ n+1  2 0 for n = −1 [ıθ] 2 0 for n = −1 =  0 for n = −1 2 for n = −1 2. We parameterize the contour and...
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Advanced Mathematical Methods for Scientists and Engineers Episode 2 Part 5 pps

Advanced Mathematical Methods for Scientists and Engineers Episode 2 Part 5 pps

... n) n 11. ∞  n =2 (−1) n ln  1 n  12. ∞  n =2 (n!) 2 (2n)! 13. ∞  n =2 3 n + 4 n + 5 5 n − 4 n − 3 5 62 Im(z) Re(z) R R 2 1 Im(z) Re(z) R R 2 1 C r 1 r 2 z C C C 1 2 z Figure 12. 5: Contours for a Laurent ... closed form. (See Exercise 12. 9.) N−1  n=1 sin(nx) =  0 for x = 2 k cos(x /2) −cos((N−1 /2) x) 2 sin(x /2) for x = 2 k The partial sums have infinite...
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Advanced Mathematical Methods for Scientists and Engineers Episode 2 Part 6 doc

Advanced Mathematical Methods for Scientists and Engineers Episode 2 Part 6 doc

... π) Hint 12. 23 CONTINUE Hint 12. 24 CONTINUE Hint 12. 25 Hint 12. 26 Hint 12. 27 Hint 12. 28 Hint 12. 29 Hint 12. 30 CONTINUE 581 Solution 12. 22 cos z = −cos(z − π) = − ∞  n=0 (−1) n (z −π) 2n (2n)! = ∞  n=0 (−1) n+1 (z ... polynomial. 2 6 12 20 4 6 8 2 2 We s ee that the polynomial is second order. p(n) = an 2 + bn + c. We solve for the coefficients. a + b + c = 2 4a + 2b + c...
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Advanced Mathematical Methods for Scientists and Engineers Episode 2 Part 7 pdf

Advanced Mathematical Methods for Scientists and Engineers Episode 2 Part 7 pdf

... 0.  |z|=3 z  1 z − ı /2 − 1 z − 2 + c (z − 2) 2 + d  dz = 0  |z|=3  (z − ı /2) + ı /2 z − ı /2 − (z − 2) + 2 z − 2 + c(z − 2) + 2c (z − 2) 2  dz = 0 2  ı 2 − 2 + c  = 0 c = 2 − ı 2 Thus we see that ... − 2/ z = − 1 z ∞  n=0  2 z  n , for |2/ z| < 1 = − ∞  n=0 2 n z −n−1 , for |z| > 2 = − −1  n=−∞ 2 −n−1 z n , for |z| > 2 620 1...
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Advanced Mathematical Methods for Scientists and Engineers Episode 2 Part 8 pot

Advanced Mathematical Methods for Scientists and Engineers Episode 2 Part 8 pot

... the residue by expanding the function in a Laurent series. (1 − cos z) 2 z 7 = z −7  1 −  1 − z 2 2 + z 4 24 + O  z 6   2 = z −7  z 2 2 − z 4 24 + O  z 6   2 = z −7  z 4 4 − z 6 24 + O  z 8   = 1 4z 3 − 1 24 z + ... − n−1  k=0 lim z→ e ıπ(1+2k)/n  log z + (z − e ıπ(1+2k)/n )/z nz n−1  = − n−1  k=0  ıπ(1 + 2k)/n n e ıπ(1+2k)(n−1)/n  = − ıπ n 2 e...
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Advanced Mathematical Methods for Scientists and Engineers Episode 2 Part 9 ppt

Advanced Mathematical Methods for Scientists and Engineers Episode 2 Part 9 ppt

... are, Res  1 z 4 + 1 , e ıπ /4  = lim z→ e ıπ /4 z − e ıπ /4 z 4 + 1 = lim z→ e ıπ /4 1 4z 3 = 1 4 e −ı3π /4 = −1 − ı 4 √ 2 , Res  1 z 4 + 1 , e ı3π /4  = 1 4( e ı3π /4 ) 3 = 1 4 e −ıπ /4 = 1 − ı 4 √ 2 , We evaluate ... Res  z 2 (z 2 + 1) 2 , z = ı  Res  z 2 (z 2 + 1) 2 , z = ı  = lim z→ı d dz  (z − ı) 2 z 2 (z 2 + 1) 2  = lim z→ı d dz...
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