Word Count : 387

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समस्या है: [ (y^2 + yz),dx + (z^2 + zx),dy + (y^2 - xy),dz = 0 ] इसे हम मानक रूप में लिख सकते हैं: [ M,dx + N,dy + P,dz = 0 ] जहाँ (M = y^2 + yz), (N = z^2 + zx), (P = y^2 - xy)। पहले देखें कि क्या कोई उपयुक्त परिवर्तनीय समायोजन से हल किया जा सकता है। ध्यान दें कि (x, y, z) के गुणात्मक रूप पर आधारित समाधान की संभावना है। 1. (x = y) मानकर देखें। तब: [ M = y^2 + yz = y(y + z), _____ _____ ________ ______ ______ ____ __________ _____ ___ ________ ____ _______.
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