在阿尔冈图的草图上，用阴影表示由满足不等式 $|z|\le3$、$\operatorname{Re}z\ge-2$ 和 $\frac14\pi\le\arg z\le\pi$ 的复数 $z$ 所对应的点组成的区域。

Answer all questions. You should use a calculator where appropriate.

You must show all necessary working clearly; no marks will be given for unsupported answers from a calculator.

Give non-exact numerical answers correct to 3 significant figures, or 1 decimal place for angles in degrees, unless a different level of accuracy is specified in the question.

请回答所有题目。适当时应使用计算器。必须清楚展示所有必要的计算过程；仅给出计算器答案而没有过程，不予评分。除非题目另有精度要求，非精确数值答案保留 3 位有效数字，以度为单位的角度保留 1 位小数。

三个条件分别给出闭圆盘、直线 $x=-2$ 右侧，以及辐角介于 $\pi/4$ 与 $\pi$ 的扇形。涂色须同时满足三个条件。

Write $z=x+y\mathrm{i}$. Draw the circle $x^2+y^2=9$, the vertical line $x=-2$, and the ray $y=x$ from the origin into the first quadrant.

Shade the points satisfying

Equivalently, shade the part inside the circle, to the right of $x=-2$, above the real axis and above the ray $y=x$. Include the boundaries, except the origin where the argument is undefined.