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solution=solve([char(w1(0))'=0'],[char(w2(0))'=0'],[char(w1(alpha*l))'='char(w2(alpha*l))],[char(dw1(alpha*l))'='char(dw2(alpha*l))],'a1','b1','a2','b2');

??? solution=solve([char(w1(0))'=0'],[char(w2(0))'=0'],[char(w1(alpha*l))'='char(w2(alpha*l))],[char(dw1(alpha*l))'='char(dw2(alpha*l))],'a1','b1','a2','b2');
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Error: The expression to the left of the equals sign is not a valid target for an assignment.
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