12. Use differentiation formulas from calculus to find f'(z). a) f(2) = 3z2 - 2z +4i b) f(2) = (2z+5)(z+i) az +b Find the derivative of the function T(z) =- where a, b, c, d are complex 13. P+ 23 numbers such that ad – bc # 0. When is T'(z) = 0?

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
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Question 12 Question 13
Use the definition f'(z0) = lim (2) - f (Zo) of the derivative to find the
6.
Find the image of the semi-infinite strip x20, 0s ysT under the
transformation w= e², and label the corresponding portions of the boundaries.
7.
Use the ɛ,8 - definition of a limit to prove the following limit.
lim (az + b) = az, +b, for complex numbers a and b with a ± 0.
8.
Use Limit Laws to evaluate the following limits:
iz -1
422
a) lim
b)
lim (z2 – 4z+2+ 5i)
c)
lim
2+0 (z – 1)?
z+2+i
4z° +z
lim
9.
Prove the following limit.
= 00
2+0 z+i
10.
Use the precise ɛ,8 - definition of continuity to prove that if f(z) is continuous
at zo then f(z) is continuous at Zo-
11.
z- z0
derivative of f(z) =
for z +0.
12.
Use differentiation formulas from calculus to find f'(z).
a)
f(2) = 3z? – 2z+ 4i
b)
f(z) = (2z+5)(z+i)³
az +b
13.
where a, b, c, d are complex
Find the derivative of the function T(z) =
cz +d°
numbers such that ad – bc + 0. When is T'(z) = 0?
14.
Use the Cauchy-Riemann Equations to show that f'(z) does not exist at any point.
a)
f(z) = Z
b)
ƒ(2) = e*eiy
15.
Use the Cauchy-Riemann Equations to show that f(z) = z Im(z) is only
differentiable at z = 0 and find the value of f'(0).
16.
Use the Cauchy-Riemann Equations to show that f(z) = z' is differentiable for
all z and find f'(z).
Transcribed Image Text:Use the definition f'(z0) = lim (2) - f (Zo) of the derivative to find the 6. Find the image of the semi-infinite strip x20, 0s ysT under the transformation w= e², and label the corresponding portions of the boundaries. 7. Use the ɛ,8 - definition of a limit to prove the following limit. lim (az + b) = az, +b, for complex numbers a and b with a ± 0. 8. Use Limit Laws to evaluate the following limits: iz -1 422 a) lim b) lim (z2 – 4z+2+ 5i) c) lim 2+0 (z – 1)? z+2+i 4z° +z lim 9. Prove the following limit. = 00 2+0 z+i 10. Use the precise ɛ,8 - definition of continuity to prove that if f(z) is continuous at zo then f(z) is continuous at Zo- 11. z- z0 derivative of f(z) = for z +0. 12. Use differentiation formulas from calculus to find f'(z). a) f(2) = 3z? – 2z+ 4i b) f(z) = (2z+5)(z+i)³ az +b 13. where a, b, c, d are complex Find the derivative of the function T(z) = cz +d° numbers such that ad – bc + 0. When is T'(z) = 0? 14. Use the Cauchy-Riemann Equations to show that f'(z) does not exist at any point. a) f(z) = Z b) ƒ(2) = e*eiy 15. Use the Cauchy-Riemann Equations to show that f(z) = z Im(z) is only differentiable at z = 0 and find the value of f'(0). 16. Use the Cauchy-Riemann Equations to show that f(z) = z' is differentiable for all z and find f'(z).
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