Explanation
$$ = (\cfrac{-2x^3}{3} + x^2) | _0 ^1 - \int xlogxdx $$to Integrate $$xlogxdx$$, substitute $$logx =t,$$ $$dx= x dt$$Integral becomes $$ \int e^{2t}tdt $$Integration by parts and then putting limits gives $$= -1/4$$
The ratio in which the area bounded by the curves $$y^2=12x $$ and $$x^2=12y$$ is divided by the line x $$=$$ 3 is
$$y^2 =12 x$$ $$x^2 =12 y$$ $$\displaystyle \int_0^3 \sqrt{12 x}-\int_0^3 \dfrac{x^2}{12} =\int_0^3 \sqrt{12 x} -\dfrac{x^2}{12}$$ $$\displaystyle \dfrac{2\sqrt{12}x^{\dfrac{3}{2}}}{3} - \dfrac{x^3}{36}\int_0^3$$ $$\displaystyle \dfrac{\sqrt{12}3\sqrt{3}}{3} - \dfrac{27}{36}$$ $$12 - \dfrac{3}{4} =\dfrac{45}{4}$$ Same as $$\dfrac{8}{4} $$ for remaining part $$\therefore ratio =\dfrac{15}{49}$$
Locus of $$|z-(4+4i)|=4$$ is a circle with center at $$(4,4)$$ and radius $$4$$ is Complex plane.
Hence, locus of $$|z-(4+4i)| \geq 4$$ is all points either on or outside the circle with radius $$4$$ and center $$(4,4)$$.
Similarly, locus of $$|-z-(4+4i)| \geq 4$$ is all points on or outside the circle with radius $$4$$ and center $$(-4,-4)$$.
Locus of $$|iz-(4+4i)| \geq 4$$ is all points on or outside the circle with radius $$4$$ and center $$(-4,4)$$.
Finally, locus of $$|-iz-(4+4i)| \geq 4$$ is all points on or outside the circle with radius $$4$$ and center $$(4,-4)$$.
Hence, the area bounded by locus of all four will be the area enclosed by the four circles in argand plane as shown in the figure. Area bounded$$=$$ area of shaded region$$= 64 - \pi r^{2}$$$$=64-16\pi =16(4-\pi )$$
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