4t ESO/4.01 NOMBRES/4.01.2 Aproximació i error 4.01.2.56 Error relatiu (arrodonir dècims) 1. Arrodoneix als dècims les quantitats següents.
2. Calcula l'error absolut(s'escriu amb tants decimals com la quantitat).
3. Calculeu l'error relatiu (arrodonit als deu mil·lèsims)
Posa punt en lloc de coma

Quantitat	Arrodoniment	Error absolut	Error relatiu
#a_1	{#1}	{#2}	{#3}
#a_2	{#4}	{#5}	{#6}
#a_3	{#7}	{#8}	{#9}
#a_4	{#10}	{#11}	{#12}

]]> 12.0000000 0.5000000 0 <question><wirisCasSession><![CDATA[<session lang="ca" version="2.0"><library closed="false"><mtext style="color:#ffc800" xml:lang="es">variables</mtext><group><command><input><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>a_1</mi><mo>=</mo><mfrac><mrow><mi>arrodoneix</mi><mo>(</mo><mn>1000</mn><mo>*</mo><mi>aleatori</mi><mo>(</mo><mn>5</mn><mo>.</mo><mn>1</mn><mo>)</mo><mo>)</mo></mrow><mn>1000</mn></mfrac><mo>*</mo><mn>1</mn><mo>.</mo><mn>0</mn></math></input></command><command><input><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>b_1</mi><mo>=</mo><mi>arrodoneix</mi><mo>(</mo><mn>10</mn><mo>*</mo><mi>a_1</mi><mo>)</mo></math></input></command><command><input><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>c_1</mi><mo>=</mo><mo>(</mo><mi>b_1</mi><mo>/</mo><mn>10</mn><mo>)</mo><mo>*</mo><mn>1</mn><mo>.</mo><mn>0</mn></math></input></command><command><input><math 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xmlns="http://www.w3.org/1998/Math/MathML"><mn>0.008</mn></math></output></command><command><input><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>d_4</mi></math></input><output><math xmlns="http://www.w3.org/1998/Math/MathML"><mn>0.05</mn></math></output></command><command><input><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>e_1</mi></math></input><output><math xmlns="http://www.w3.org/1998/Math/MathML"><mn>0.0174</mn></math></output></command><command><input><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>e_2</mi></math></input><output><math xmlns="http://www.w3.org/1998/Math/MathML"><mn>0.0115</mn></math></output></command><command><input><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>e_3</mi></math></input><output><math xmlns="http://www.w3.org/1998/Math/MathML"><mn>0.0026</mn></math></output></command><command><input><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>e_4</mi></math></input><output><math xmlns="http://www.w3.org/1998/Math/MathML"><mn>0.0145</mn></math></output></command></group><group><command><input><math xmlns="http://www.w3.org/1998/Math/MathML"/></input></command></group></session>]]></wirisCasSession><assertions><assertion name="syntax_expression"/><assertion name="equivalent_symbolic"/></assertions><options><option name="precision">6</option><option name="implicit_times_operator">false</option><option name="times_operator">·</option><option name="imaginary_unit">i</option><option name="tolerance">10^(-4)</option><option name="relative_tolerance">false</option></options><localData><data name="casSession"/></localData></question> Per trobar l'error absolut, n'hi ha prou amb fer la resta:

quantitat - arrodoniment

i treure el signe.

Per trobar l'error relatiu, dividim l'error absolut per la quantitat inicial.

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