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Hi, I want to buy a 4U textbook. I've heard about a few books( Cambridge, Terry Lee etc). I was wondering if Terry Lee's one is good. Please help me :) Thank you :D

Oh ok sweet. Thank you :spin:

These: - https://www.google.com.au/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&uact=8&ved=0ahUKEwjwtLHNuczMAhWEHZQKHaKoC_4QjRwIBw&url=https%3A%2F%2Fmathmaine.wordpress.com%2F2010%2F04%2F01%2Fsigma-and-pi-notation%2F&psig=AFQjCNEdOITiLo1vxyMlvnpU4lVOIk0lxg&ust=1462864617780831 -...

I'm talking about the double sigma notation where you use it for questions such as find the x^4 coefficient of (x+11)^12 = (x+1)^4*(x+1)^8. And then equate the coefficients.

Hi, I'm currently learning BT in class. My math tutor said I have to prove the Double sigma notation before using in HSC. But my school teacher didn't mention anything about it and just taught us to use it just as it is. Does anyone know whether we are meant to prove it \ before using it...

Hi, Can I please have your Chemistry and Biology notes? Thanks, Jess

Hi, Can I please buy all the chemistry notes? Thanks, Jess

Hi, Can I please buy all the essays and creative for Motorcycle diaries and brave new world? Thank you, Jess

Would you be able to email a sample of the motorcycle diaries and Hamlet notes? jessica.liman24@gmail.com