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where 
and use a pocket calculator to calculate it to four significant figures.
.
.
.
rule, show that:
rule, show that:
.
.
in a graph.
, show that:
rule, show that:
with a pocket calculator and round the result to four significant figures.
with a calculator and round the result to four significant figures.
.
with a calculator and leave the result in three significant figures.
with a calculator and leave the result in three decimal places.
with a calculator and leave the result to three decimal places.
.
with a calculator and leave the result in two significant figures.
in a graph.
.
and 
so that to the graph below belongs to the function 
.
.
and 
apply:
.
