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If f(x) = 3x − 2 and g(x) = kx + 4, and (f + g)(2) = 18, what is the value of k?यदि f(x) = 3x − 2 और g(x) = kx + 4 हैं तथा (f + g)(2) = 18 है, तो k का मान क्या है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: 55
Since (f + g)(2) = f(2) + g(2), we get 18 = [3(2) − 2] + [2k + 4] = 2k + 8. Thus 2k = 10, so k = 5.क्योंकि (f + g)(2) = f(2) + g(2), इसलिए 18 = [3(2) − 2] + [2k + 4] = 2k + 8। अतः 2k = 10, इसलिए k = 5।
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