I really need your help (am going to sleep; no time to learn how to do these)

The attachment's a bit small and hard for me to read, but here's what I think the problems say. Please reply with any necessary corrections:

1) Using Std2 - Cos[something illegible], calculate:

a) \(\displaystyle \displaystyle \lim _{m\to 0}\left(\frac{1+\sqrt{2}+\sqrt{3}+...+\sqrt{m}}{m\sqrt{m}}\right)\)

b) \(\displaystyle \displaystyle \lim _{m\to 0}\left(\frac{ln\left(1\right)+ln\left(2\right)+ln\left(3\right)+...+ln\left(m\right)} {ln\left(m\right)}\right)\)

\(\displaystyle ln = log_10\)


2) Using D'Alembert [naport?] [oreterium?], calculate:

\(\displaystyle \displaystyle \lim _{m\to \infty }\left(x_m\right)=?\)

a) \(\displaystyle x_m=\dfrac{S^n}{m!}\)

b) \(\displaystyle x_m=\dfrac{2^m+2 \cdot 3^m + 3 \cdot 5^m}{3^m+ 3 \cdot 4^m + 5 \cdot 5^m}\)


3) Convergent/Divergent

a) \(\displaystyle a_m=\dfrac{1}{2\cdot5}+\dfrac{1}{3\cdot6}+\dfrac{1}{4\cdot7}+...+\dfrac{1}{(m+1)(m+4)}\)

b) \(\displaystyle b_m=\dfrac{1}{1\cdot2}+\dfrac{1}{2\cdot3}+\dfrac{1}{3\cdot4}+...+\dfrac{1}{m(m+1)}\)

When you reply, please also include any and all work you've done on these problems, even if you know it's wrong. The more complete you can be about exactly where you're stuck, the better help we can provide. Thank you.
 
"\(\displaystyle ln= log_{10}\)" is very strange! It is not uncommon to use just "log" without any given base to mean the common logarithm, base 10, but "ln" is always used to mean the "natural logarithm".

If, as you appear to be saying, you have no idea how to do any of these questions, and don't understand many of the words used, where in the world did you get these questions?
 
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