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Revision **2** -
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*Thu Jun 14 17:08:51 2001 UTC*
(18 years, 8 months ago)
by *sam*

File size: 1363 byte(s)

File size: 1363 byte(s)

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 3, 2 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 ( )'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( )) are evaluated before exponents are 33 taken so sin(4x)^2 and (sin(4x))^2 are the same thing.

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