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I got a question on sequences and series from the cambridge textbook: 10c) Find the sum of the first 300 terms of: 1/1+1/2+2/2+1/3+2/3+3/3+1/4+2/4+3/4+4/4..... thanks

here are some questions i couldnt't get recently: 1. write down the equation whose roots are the abscissae of the points of intersection of the curves xy= 5 and y=x^2 -5x+6 there was another question similar to this however it said ordinated instead of abscissae..plz explain what these...

Express with integer denominator: 1/(sqrt2+sqrt3+sqrt5)

hey im in yr 11 and need help in some qs from the cambridge textbook, : 1.a certain tank can be filled by two pipes in 80 minutes. the larger pipe by itself can fill the tank in 2 hours less than the smaller pipe by itself. How long does each pipe take to fill the tank on its own? 2. a...

Here are some ext questions in the 3 unit cambridge text book which i couldnt get: 1.if (a+b)^2 + (b+c)^2 + (c+d)^2=4(ab+bc+cd), prove that a=b=c=d 2.factorise A^4 +B^4. - in the answers it sez that this equals (A^2-ABsqrt2+B^@)(A^2+ABsqrt2+B^2) 3.Simplify 1/(a-b)(a-c) + 1/(b-c)(b-a)...

Can anyone show me how to derive the displacemment formula: S=ut+1/2at^2 ?

Can someone give me a general idea about which textbook is best used for ancient history? I have unlocking the past but i dont know if theyre may be other viable textbooks which i could buy

i signed up for sam in 2004..yet it still says in my account next to each of my subjects- 2003...can some1 plz hlp me?

Has anyone here read the da vinci code by dan brown, i read it and i found it absolutely mind blowing, considering that im a catholic....God forgive me

Can someone help me on this question....describe a test which a student could use in the school laboratory to identify the 'white soluble solid' as potassium sulphate OR sugar

Just wondering what the best Uni in Sydney is for Medicine/surgery....and i heard that you can't start medicine right away at USYD...is this true?

Ive just started physics and i was just wondering how v=frequency x wavelength is turned into f=1/t thanks