383 reputation
421
bio website sbsangpi.com
location Melbourne, Australia
age 21
visits member for 3 years, 3 months
seen Feb 27 at 12:08

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Apr
4
comment Find the derivative respect to $x$?
thank you so much!
Apr
4
comment show that two equation are the same in differentiation
Can u plz write the chain rule formula, so that I can use next time. thx
Apr
4
comment show that two equation are the same in differentiation
can u plz give me the chain rule formula? thx
Apr
4
comment show that two equation are the same in differentiation
very close but should be $\dfrac{2y}{\sqrt{x^2+1}}$
Apr
4
comment find the derivative respect to $x$ and explain step by step?
all clear thx! @BrianM.Scott
Apr
4
comment find the derivative respect to $x$ and explain step by step?
thx! can u plz solve the quation in that method? I would like to know the steps! :D
Apr
4
comment Find the derivative respect to $x$?
Can u explanin? @MichaelHardy
Apr
4
comment Find the derivative respect to $x$?
I would like to know where is that $$ \frac{dy}{du} = \frac{1}{2\sqrt{u}} $$ come from?
Apr
4
comment Find the derivative respect to $x$?
I understand now $(2x+1)^1/2$ <br> 1/2(2x+1)1/2-1 <br>$\dfrac{1}{\sqrt{2x+1}}$
Apr
3
comment Find the derivative respect to $x$?
aww sorry. Can you plz explain me more? thx
Apr
3
comment Find the derivative respect to $x$?
thx, but I'm not understood yet, can u plz explain more?
Apr
3
comment Find the derivative respect to $x$?
@MichaelHardy the question is only $\sqrt{2x+1}$
Apr
3
comment Find the gradient and stated value for x?
hehe..thx! understood now!
Apr
3
comment Find the gradient and stated value for x?
but my answer is 1/27 not $=27^{\frac{2}{3}}$
Apr
3
comment Find the gradient and stated value for x?
$=27^{\frac{2}{3}}$
Apr
3
comment Find the gradient and stated value for x?
the problem is there is no x in 27
Apr
3
comment Find the gradient and stated value for x?
sorry @DavidMitra i still don't get it! Can you plz explain more?
Oct
3
comment Counting Methods?
ok! so, let say, if only one men on the committee? there are four man, so there must be 4 choices.so the number of ways to pick one out of 4 men is 4.The other seven committee members must be women, and there are 3 way to pick. so the total number of ways of picking 1 out 4 men and 4 out of 7 women candidate is $7*3=21$ ? but the answer is 140
Oct
3
comment Counting Methods?
2) I can't get the answer 7
Oct
2
comment Counting Methods?
+1 great answer. thx! Looking forward help! God bless you!