- Messages
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View attachment 21800
After you've drawn the argand diagram it's just a bit of geometry. The red line is the Max Re z which is 2+x. You have to find the value of x. Consider the right-angled triangle with the hypotenuse 2 as it is the radius of the circle. The angle subtended at the centre is π/4, so now just find the length of opposite. The opposite is x so Re z is 2+opp
lol.. why have you ignored the yellow area on the right side of the red line?