30 lines
783 B
XML
30 lines
783 B
XML
#align(left, $
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& 1 &&=& a_1 &+& a_2 &+& a_3 &+& a_4 \
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& 1 + 2^3 &&=& 2a_1 &+& 2^2a_2 &+& 2^3a_3 &+& 2^4a_4 \
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& 1 + 2^3 + 3^3 &&=& 3a_1 &+& 3^2a_2 &+& 3^3a_3 &+& 3^4a_4 \
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& 1 + 2^3 + 3^3 + 4^4 &&=& 4a_1 &+& 4^2a_2 &+& 4^3a_3 &+& 4^4a_4
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$)
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$
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cases(
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1 & = thin a_1 &+ a_2 &+ a_3 &+ a_4 ,
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1 + 2^3 & = thin 2a_1 &+ 2^2a_2 &+ 2^3a_3 &+ 2^4a_4,
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1 + 2^3 + 3^3 & = thin 3a_1 &+ 3^2a_2 &+ 3^3a_3 &+ 3^4a_4,
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1 + 2^3 + 3^3 + 4^4 & = thin 4a_1 &+ 4^2a_2 &+ 4^3a_3 &+ 4^4a_4,
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)
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$
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$ cases(
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2y_1 +&& y_2 =&& 4x_1\
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y_1 +&& 2y_2 =&& -12x_2\
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-2y_1 +&& 3y_2 =&& x_3
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) $
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$
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2y_1 +&& y_2 =&& 4x_1\
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y_1 +&& 2y_2 =&& -12x_2\
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-2y_1 +&& 3y_2 =&& x_3
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$
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