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help ...please explain fully

help ...please explain fully

Question Image
Grade:12

6 Answers

esha singh
23 Points
7 years ago
is the answer none of these ?
 
milind
23 Points
7 years ago
yeps
milind
23 Points
7 years ago
hey esha ...now tell me how it is non of these please
 
esha singh
23 Points
7 years ago
oh sorry i couldnot chat yesterday. i logged off. i will explain. you can do this question in many ways easiest method to save time is differentiate both sides of the equation.  keeping fuction of y as constant.f ‘ (x+y)= f ‘ (x)f (y) now put x=0 and y=x . f ‘ (x)= f ‘(0)f(x) now put x=5 and find your answer. you can also use limits method .
 
esha singh
23 Points
7 years ago
its a bit lengthy (limits method) i find this method more appealing.
 
milind
23 Points
7 years ago
thanx esha .......i send you a friend request …....can u add me ….….….….then i can ask some questions. directly from scraps........

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