Question

tan^-1[(√x+√a)/(1-√(xa))]
differentiate it plz
m gtting 1/2(√x)
which is not correct answer is
1/[2(√x)(1+x)]

Answer 1

same type of question with different substitution

Answer 2

hmm i think i did something wrong let me do it again

Answer 3

well u don't have to substitue :) @hartnn
i think i forgot to differentiate tan^-1 (x)^1/2
i missed the tan^-1 part

Answer 4

say, sqrt x= tan y
sqrt a = tan alpha
then , [(√x+√a)/(1-√(xa))] =... ?

Answer 5

ohh..so now did u get it ?

Answer 6

u have to use tan^-1 x + tan^-1 y formula
well not now

Answer 7

trying again

Answer 8

:'( not getting :'(

Answer 9

how to differnatiate tan^-1(x)^1/2

Answer 10

use chain rule, know about it ?

Answer 11

no :'( that's the problem simple chain rule i know

Answer 12

like this one sin(cos3x) but never did for inverse trign.........

Answer 13

is the differenatition of tan^-1(x)^1/2 is

Answer 14

is =X
=1/(1+(x^1/2)^2 . 1/2*(x)^-1/2 ????????

Answer 15

ok, derivative of tan^{-1} x is 1/(1+x^2), right ??
for derivative of tan^{-1} sqrt(x)
you do
1/(1+ [\sqrt x]^2) times deribative of sqrt x

Answer 16

yep

Answer 17

i think i have used chain rule -_- is that a chain rule @hartnn

Answer 18

you did it,,,kitty

Answer 19

didn't you get the answer then ?
yes, thats was chain rule only...

Answer 20

lol i know everything but still do silly things -_- @souvik

Answer 21

it happens some time...

Answer 22

@hartnn -
chain rule :O
so that's a chain rule

Answer 23

because what you wrote matches with your final answer...

Answer 24

not some times everytime it happens

Answer 25

keep your head cool....like MSD

Answer 26

bcoz of calculation mistake i lost 3 marks in maths prob :'(
i did everything correct but in final answer i made a error in multiplication

Answer 27

MSD??????

Answer 28

@hartnn -tahnx :)

Answer 29

hey, welcome anytime ^_^

Answer 30

:)

Answer 31

Indian cricket team captain...

Answer 32

oh :OOO ms dhoni :OOO i don't like him lol

Answer 33

why?

Answer 34

reminds me of my frenemy :P