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المعادلات التفاضلية: Mathematics Tawjihi question with answer

A Tawjihi Mathematics question (التكامل) with the answer and worked steps.

From the Tawjihi question bank: Mathematics · التكامل

أجد الحل الخاص للمعادلة dydx=sinxsecy\frac{dy}{dx}=\sin x\sec y الذي يحقق y(0)=0y(0)=0.

المعادلات التفاضلية

The answer

نفصل: cosydy=sinxdx\cos y\,dy=\sin x\,dx. بالتكامل: siny=cosx+C\sin y=-\cos x+C. نعوض x=0,y=0x=0,y=0: 0=1+C0=-1+C، إذن C=1C=1. الحل الخاص siny=1cosx\sin y=1-cos x.

Explanation

مثال الحل الخاص بعد فصل المتغيرات.

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