Precedence of operators

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Bill Foster

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6 years, 1 month ago

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Bill Foster 6 years, 1 month ago

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Newcastle University Mathematics and Statistics 9 years, 2 months ago

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Name	Status	Author	Last Modified
Precedence of operators	Ready to use	Newcastle University Mathematics and Statistics	20/11/2019 14:50
2. Precedence of operators	draft	emma rand	27/07/2018 14:37
ME420 intro: Precedence of operators	draft	Timur Zaripov	11/09/2019 11:48
Prerequisites - Calculate an expression	Ready to use	Timur Zaripov	17/06/2022 09:37
BIDMAS: Precedence of operators 4	Ready to use	Ruth Hand	16/01/2023 11:33

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Question statement

Evaluate the following expressions:

Give any introductory information the student needs.

			Name	Type	Generated Value

f2	integer	3
b2	integer	7
d2	integer	4
g2	integer	3
i1	integer	5
a2	integer	5
c2	integer	2
e1	integer	3
e2	integer	1
a	number	7247
c	integer	4
b	number	80
d	integer	2
g	integer	4
f	integer	3
h	integer	4
k	integer	5
j	integer	4
m	integer	6
l	integer	5
n	integer	7
q	integer	9
p	integer	99
s	integer	11
r	integer	5
t	integer	3

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Value

xxxxxxxxxx
 
random(1..11 except e2)

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Description

Describe what this variable represents, and list any assumptions made about its value.

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Generated value: `integer`

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→ Used by:

Advice
"Part b)" - prompt
"Part b)" - Minimum accepted value
"Part b)" - Maximum accepted value

Advice

First work through the expression from left to right, evaluating any expressions inside brackets, being careful to evaluate powers (indices) before MDAS. Thus:

$[(\var{a}-\var{b} \div \var{c}^\var{d})+\var{e1} \times \var{f}^\var{g}] \div (\var{h} \times \var{i1}^\var{j} -\var{k}) \times [\var{l} -\var{m} \times \var{n} + \var{p} \div \var{q}]$

$=[(\var{a}-\var{b} \div \var{c^d})+\var{e1} \times \var{f^g}] \div (\var{h} \times \var{i1^j} -\var{k}) \times [\var{l} -\var{m} \times \var{n} + \var{p} \div \var{q}]$

$=[(\var{a}-\var{b / (c^d)})+\var{e1*f^g}] \div (\var{h * i1^j} -\var{k}) \times [\var{l} -\var{m*n} + \var{p / q}]$

$=[\var{a-b / (c^d)+e1*f^g}] \div (\var{h * i1^j -k}) \times [\var{l -m*n + p / q}]=\var{t*(l-m*n+s)}$

$\var{a2}+\var{b2} \times (\var{-c2})^\var{d2} +(\var{e2}-\var{f2})^\var{g2}=\var{a2}+\var{b2} \times (\var{(-c2)^d2}) +(\var{e2-f2})^\var{g2}=\var{a2}+\var{b2*((-c2)^d2)} +\var{(e2-f2)^g2}=\var{a2+b2*(-c2)^d2 +(e2-f2)^g2}$

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Bill Foster 6 years, 1 month ago

Newcastle University Mathematics and Statistics 9 years, 2 months ago

Error in variable testing condition

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Generated value: `integer`

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Precedence of operators

Metadata

Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

Contributors

Feedback

History

Comment

Checkpoint description

Bill Foster 6 years, 1 month ago

Newcastle University Mathematics and Statistics 9 years, 2 months ago

Error in variable testing condition

Error

Warning

Generated value: integer

Parts

Number entry

Advanced settings

Generated value: `integer`