Solved Problem on Contours
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d)z=t+2it,<t<0


The function z is a parametric function of the type
z(t)=x(t)+iy(t)
Identifying the functions x(t) and y(t)
(I)x(t)=t(II)y(t)=2t
substituting expression (I) into expression (II)
y=2x
Graph 1

The function z(t) represents a branch of hyperbola oriented from (−∞, 0) to (0, −∞), (Graph 1).
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