��.196 �� 10-11 �� (��)

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$�� 196. �� :�) {log(4; x)-log(2; y)=0, x^2-2y^2=8};�) {3^(2vx-vy)=81, lg(v(xy))=1+lg(3)};�) {log(9; x)-log(3; y)=0, x^2-5y^2+4=0};�) {2log(2;...$

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196. �� :

�) {log(4; x)-log(2; y)=0, x^2-2y^2=8};

�) {3^(2vx-vy)=81, lg(v(xy))=1+lg(3)};

�) {log(9; x)-log(3; y)=0, x^2-5y^2+4=0};

�) {2log(2; x)-3^y=15, 3^ylog(2; x)=2log(2; x)+3^(y+1)}.

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