Continuity and differentiability

Problem 1) Let f(x) be a polynomial of degree one and f(x)be a function defined by
f(x) = { g(x) ; for x ≤ 0
{ and (1+x) / (2+x) 1/x ; for x >0
If f(x) is continous at x=0 and f(-1) = f ' (1), then g(x) is equals to :-
(a) -1/9 (1+6 ln 3) x (b) 1/9 (1+6 ln 3) x
(c) -1/9 (1-6 ln3) x (d) none of these

6 Answers

3
msp ·

i just want to know whether u have mistyped the qn.

1
rahul nair ·

g(0) should be 0.....none of the options indicate so.......

1
Philip Calvert ·

one doubt in the statement of question...

is (1+x) / (2+x)1/x a polynomial ?

3
msp ·

yups philip i too ask the same,i guess that the polynomial shud be g(x)

11
Tush Watts ·

Edit.....

the function f(x) is given by

11
Tush Watts ·

@ xyz
we have to find g(x)

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