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If (p(x)=x^3+ax+b), (p(2)=13), and (p(-1)=-7), what is the value of (a+b)?यदि (p(x)=x^3+ax+b), (p(2)=13) और (p(-1)=-7), तो (a+b) का मान क्या है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (2)(2)
The conditions give (2a+b=5) and (-a+b=-6), so (a=\frac{11}{3}) and (b=-\frac{7}{3}). Hence (a+b=\frac{4}{3}), so none of the listed choices is correct.शर्तों से (2a+b=5) और (-a+b=-6) मिलते हैं, इसलिए (a=\frac{11}{3}) और (b=-\frac{7}{3})। अतः (a+b=\frac{4}{3}) नहीं बल्कि विकल्पों में कोई सही नहीं होता।
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