��.194 �� 10-11 �� (��)

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$�� 194. �� :�) {3^(2x)+4^(2y)=82, 3^x-4^y=8};�) {(2^(x+1)-3)�2^(y-1)=1, v(3x+y^2)=x+y};�) {2^cos(x)+2^(1/cos(y))=5, 2^(cos(x)+1/cos(y))=4};�)...$

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194. �� :

�) {3^(2x)+4^(2y)=82, 3^x-4^y=8};

�) {(2^(x+1)-3)�2^(y-1)=1, v(3x+y^2)=x+y};

�) {2^cos(x)+2^(1/cos(y))=5, 2^(cos(x)+1/cos(y))=4};

�) {9^(2tg(x)+cos(y))=3, 9^cos(y)-81^tg(x)=2}.

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