यदि (f(x)=x-2+2x) और (g(x)=x-2-2x) हैं, तो ((f-g)(-3)) क्या होगा?
If (f(x)=x-2+2x) and (g(x)=x-2-2x), what is ((f-g)(-3))?
Explanation opens after your attempt
A. (-12)
Concept
((f-g)(x)=4x), hence ((f-g)(-3)=-12). In subtraction, change the sign of the whole second function.
Why this answer is correct
The correct answer is A. (-12). ((f-g)(x)=4x), hence ((f-g)(-3)=-12). In subtraction, change the sign of the whole second function.
Exam Tip
((f-g)(x)=4x), अतः ((f-g)(-3)=-12)। घटाव में दूसरे पूरे फलन का चिन्ह बदलना न भूलें।
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