0 reads0 ratings0 helpful
If (f(x)=x) and (g(x)=x+1), choose the correct solutions of ((f+g)(x)=(fg)(x)).यदि (f(x)=x) और (g(x)=x+1) हैं, तो ((f+g)(x)=(fg)(x)) के सही हल चुनिए।
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (x=\frac{1+\sqrt{5}}{2},\frac{1-\sqrt{5}}{2})(x=\frac{1+\sqrt{5}}{2},\frac{1-\sqrt{5}}{2})
((f+g)(x)=2x+1) and ((fg)(x)=x(x+1)), so (x^2-x-1=0). The quadratic formula gives (\frac{1\pm\sqrt{5}}{2}).((f+g)(x)=2x+1) और ((fg)(x)=x(x+1)), इसलिए (x^2-x-1=0)। द्विघात सूत्र से सही हल (\frac{1\pm\sqrt{5}}{2}) हैं।
Student feedback
Was this question useful?
Was this question useful?
👍 0 Helpful 👎 0 Not helpful
Difficulty
Easy0%
Medium0%
Hard0%
Was the explanation clear?
Yes 0% No 0%
0 responsesStudent Reviews
No published reviews yet.
