Question: (a) Considered the expression a n = (a n-1 ) 2 +Z , where z is some complex number (called the seed) and a 0

(a) Considered the expression an = (an-1)2 +Z , where z is some complex number (called the seed) and a0 = z. Compute a1(=a20 + z), a2(=a21 + z), a3(=a22 + z), a4, a5 and a for the following seeds: z1 = 0.1 – 0.4i, z2 = 0.5 + 0.8i, z3 = -0.9 + 0.7i, z4 = -1.1 + 0.1i, z5 = 0 – 1.3i, and z6 = 1 + 1i.

(b) The dark portion of the graph represents the set of all values z = x+ yi that are in the Mandelbrot set. Determine which complex numbers in part (a) are in this set by plotting them on the graph. Do the complex numbers that are not in the Mandelbrot set have any common characteristics regarding the values of found in part (a)?

(c) Compute |z| = √(x2+y2) for each of the complex numbers in part (a). Now compute |a6| for each of the complex numbers in part (a). For which complex numbers is |a6 ≤ |z| ≤ 2? Conclude that the criterion for a complex number to be in the Mandelbrot set is that |an| ≤ |z| and |z| ≤ 2.


Imaginary axis У -1 Real axis

Imaginary axis -1 Real axis

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