Edexcel AS Level Maths: 14.7 Working With Natural Logarithms

Pearson A level maths, pure maths year 1 textbook (14.7)

In this video I cover:

1. The definition of a natural logarithm
2. Sketching the natural logarithmic graph
3. Solving exponential equations
4. Solving natural logarithmic equations

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[zeeshanzamurred]

Clarification - for exam style question 4, the - in front of ln4 should be taken to the power using power rule for logs, giving b=4^-1=1/4.

[S.C.A._U]

top notch, i did not open my books to this topic yet but now i feel already for any question, tahnk you so much man, i appreciate it LOTSSS, , , LOVE FROM NAMIBIA

[AYADN]

Absoluty brilliant video zeesh as per😊

[dddikekdi]

Hi thanks a lot this is extremely helpful- will you be covering chapters 9-13 as pure by any chance as my mocks are in may?

[CharlieHill_]

Hi, I'm currently working on Exam Q2 and I was wondering if there was a mistake at 7:31 because x^2 - 9x + 20 factorises to x=-5 or x=-4 ?? Is there something I'm missing, or is this the case because y=ln x is only defined for x>0, in which case I'm a little lost!

[HamzaElsharkawy-rbnc]

sure sir to bother you but for the final question surely B would = 1/4 because you would have to use the power rule to make the symbols the same. Anyways thank you dont know why i havent left a comment thanking you considering you have single handedly carried me throughout alevels being the only maths resource i use

[Vanessa-cvyy]

how is lne^x equal to x if lne = 1 and 1^x = 1 so wouldnt lne^x be 1

[Boston-bgxc]

do you recommend anyone for A level OCR physics with the same energy as you.