Evaluate โซf ๐๐ฃ๐๐ ๐ where ๐( ๐ง )= ๐ฅ^2 + ๐๐ฆ^2 where c is given by ๐ง (๐ก )= ๐ก^2 + ๐๐ก^2, 0 โค ๐ก โค 1
โซCf=[z(t)=t2+it2dz(t)=(2t+2it)dt=2(1+i)tdtf(z)=x2+iy2==(t2)2+i(t2)2==(1+i)t4]=โซ01(1+i)t4โ 2(1+i)tdt==2(1+i)2โซ01t5dt=2โ 2i6=23i\int_C{f}=\left[ \begin{array}{c} z\left( t \right) =t^2+it^2\\ dz\left( t \right) =\left( 2t+2it \right) dt=2\left( 1+i \right) tdt\\ f\left( z \right) =x^2+iy^2=\\ =\left( t^2 \right) ^2+i\left( t^2 \right) ^2=\\ =\left( 1+i \right) t^4\\\end{array} \right] =\int_0^1{\left( 1+i \right) t^4\cdot 2\left( 1+i \right) tdt}=\\=2\left( 1+i \right) ^2\int_0^1{t^5dt}=\frac{2\cdot 2i}{6}=\frac{2}{3}iโซCโf=โฃโกโz(t)=t2+it2dz(t)=(2t+2it)dt=2(1+i)tdtf(z)=x2+iy2==(t2)2+i(t2)2==(1+i)t4โโฆโคโ=โซ01โ(1+i)t4โ 2(1+i)tdt==2(1+i)2โซ01โt5dt=62โ 2iโ=32โi
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