39if f(x)=loge x and g(x)=x2 and c (4,5)
wat is c(4,5) could u please clarify?
if f(x)=loge x and g(x)=x2 and 4<c<5
then
c log (425/516) is equal to
(a) c loge5 - 8
(b) 2(c2 loge4 - 8)
(c) 2(c2 loge5 - 8)
(d) c loge4 - 8
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8 Answers
391No one here who can solve this Problem.....................???????????????
1Plz any bhaiya solve this..... y is no one replying??????????..................
62rajat what is the source of this question...??
I feel something wrong or mistyped..
I dont find any use of c lying betweeen 4 and 5!!!
1No bhaiya da question is correct.... it is from arihant mathematics..
1look, first of all, i feel this q. is too ambiguous,
as far as the solution is concerned,
say h(x)=x2log4-16logx
h(x) is diff. and continuous in (4,5)
we have by LMVT,
h(5)-h(4) /5-4 = h'(c) where c is in (4,5)
so,
we have [25log4 - 16log5]-[0] = 2clog4-16/c
or log(425/516) =(2c2log4 -16)/c2
that way im getting
c log(425/516)= 2(c2log4-8)/c
but i thing i can say is, the question shud ask us to make use of these functions, other wise there mite be many many ways of solving this one, which may use many different 'c' s..
cheers!!
