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निम्न दो (02) प्रश्नों के लिए निम्नलिखित पर विचार कीजिए :
x और y के सभी वास्तविक मानों के लिए एक फलन इस प्रकार है कि f(xy) = f(x + y) और f(5) = 10 है।
. f(20) + f(- 20) किसके बराबर है?
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दिया गया है,
फलन
हमें ज्ञात करना है:
दिए गए फलन समीकरण का उपयोग करके, हमारे पास है:
इस प्रकार,
इसलिए, सही उत्तर विकल्प 3 है।
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