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```initial import
```

```    1 # tips.txt: Global "tips" file.
2 # Tips must be separated by occurrences of "%%".
3 # Blank lines and "#" prepended lines are ignored.
4
5
6 On many problems WeBWorK will do simple arithmetic for you -- so for
7 example you can enter 4*11 instead of 44.  Remember that 1/2+3 is really
8 (1/2)+3 not 1/(2+3). Use ( )'s to make your meaning clear.
9
10 %%
11
12 If a space or juxtaposition (e.g. 2&nbsp;3, 2&nbsp;x, 2x, 2sin(3)) looks like multiplication to
13 WeBWorK, it will be interpreted as multiplication but you can always enter
14 2*3 or 2*x or 2*sin(3) to make your meaning clear.
15
16 %%
17 WeBWorK will interpret sin x and sin pi (or even sinpi) as sin(x) and sin(pi)
18 respectively but be careful since sin 2pi gets interpreted as sin(2)pi which
19 is really (sin(2))*pi.  I.e. functions (e.g. sin) are evaluated before any
20 other operations. It's always safer to use parentheses when entering functions.
21
22 %%
23
24 On almost all problems WeBWorK will allow you to use elementary expressions
25 such as 2^3 instead of 8, 2sin(3pi/2), ln(e^2), (2+tan(3))*(4-sin(5))^6-7/8,
26 and sqrt(9) or 9^.5 or 9^(1/2).
27
28 %%
29
30 When entering functions into WeBWorK,  use (&nbsp;)'s to make your meaning clear.
31 For example 3sin^2(4x) is wrong. You need to enter: 3(sin(4x))^2 or
32 3 sin(4x)^2. Functions (such as sin(&nbsp; )) are evaluated before exponents are
33 taken so sin(4x)^2 and (sin(4x))^2 are the same thing.```

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