R Run hard@thehsc Well-Known Member Joined Oct 7, 2021 Messages 784 Gender Male HSC 2022 Mar 7, 2022 #1 shouldn't it be ln(x) + ln(1-x) + c - but the ans says ln(x) - ln(1-x)..........
R Run hard@thehsc Well-Known Member Joined Oct 7, 2021 Messages 784 Gender Male HSC 2022 Mar 7, 2022 #2 Does it do with the fact that the log has an absolute sign - which when considering ln(1-x), we should be quite careful off, since it contains a negative x?
Does it do with the fact that the log has an absolute sign - which when considering ln(1-x), we should be quite careful off, since it contains a negative x?
mmmmmmmmaaaaaaa Well-Known Member Joined Jun 11, 2021 Messages 1,416 Gender Male HSC 2022 Mar 7, 2022 #3 The formula states that the derivate of the function has to be on the top to change it to ln ie. That is where the negative comes from --> d/dx (1-x) = -1
The formula states that the derivate of the function has to be on the top to change it to ln ie. That is where the negative comes from --> d/dx (1-x) = -1
R Run hard@thehsc Well-Known Member Joined Oct 7, 2021 Messages 784 Gender Male HSC 2022 Mar 7, 2022 #4 @mmmmmmmmaaaaaaa mb should have noticed that - thanks for pointing that out!!!