Examples in the user manual 35. Student answer

]]> 1.0000000 0.3333333 0 0 #x 0 That isn't correct, because if the value of «math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»x«/mi»«/math» were #answer, then we would have

«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»b«/mi»«mo»=«/mo»«mi»x«/mi»«mo»+«/mo»«mn»2«/mn»«mi»cm«/mi»«mo»§#160;«/mo»«mo»=«/mo»«mo»#«/mo»«mi»a«/mi»«mi»n«/mi»«mi»s«/mi»«mi»w«/mi»«mi»e«/mi»«mi»r«/mi»«mo»+«/mo»«mn»2«/mn»«mo»§#160;«/mo»«mi»cm«/mi»«mo»§#160;«/mo»«mo»=«/mo»«mo»§#8201;«/mo»«mo»#«/mo»«mi»s«/mi»«mi»t«/mi»«mi»u«/mi»«mi»d«/mi»«mi»e«/mi»«mi»n«/mi»«mi»t«/mi»«mi»_«/mi»«mi»b«/mi»«mi»a«/mi»«mi»s«/mi»«mi»e«/mi»«mspace linebreak=¨newline¨/»«mi»h«/mi»«mo»=«/mo»«mo»#«/mo»«mi»h«/mi»«mspace linebreak=¨newline¨/»«mspace linebreak=¨newline¨/»«mi»A«/mi»«mo»=«/mo»«mfrac»«mrow»«mi»b«/mi»«mo»§#183;«/mo»«mi»h«/mi»«/mrow»«mn»2«/mn»«/mfrac»«mo»=«/mo»«mfrac»«mrow»«mo»#«/mo»«mi»s«/mi»«mi»t«/mi»«mi»u«/mi»«mi»d«/mi»«mi»e«/mi»«mi»n«/mi»«mi»t«/mi»«mi»_«/mi»«mi»b«/mi»«mi»a«/mi»«mi»s«/mi»«mi»e«/mi»«mo»§#183;«/mo»«mo»#«/mo»«mi»h«/mi»«/mrow»«mn»2«/mn»«/mfrac»«mo»=«/mo»«mo»#«/mo»«mi»s«/mi»«mi»t«/mi»«mi»u«/mi»«mi»d«/mi»«mi»e«/mi»«mi»n«/mi»«mi»t«/mi»«mi»_«/mi»«mi»a«/mi»«mi»r«/mi»«mi»e«/mi»«mi»a«/mi»«/math»

which is not equal to the given area of #A.

]]> <question><wirisCasSession><![CDATA[<session lang="en" version="2.0"><library closed="false"><mtext style="color:#ffc800" xml:lang="en">variables</mtext><group><command><input><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>h</mi><mo> </mo><mo>=</mo><mo> </mo><mi>random</mi><mfenced><mrow><mn>2</mn><mo>,</mo><mn>15</mn></mrow></mfenced><csymbol definitionURL="http://.../units/meter#c">cm</csymbol></math></input></command><command><input><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>A</mi><mo> </mo><mo>=</mo><mo> </mo><mfrac><mn>1</mn><mn>2</mn></mfrac><mo>*</mo><mfenced><mrow><mi>random</mi><mfenced><mrow><mn>3</mn><mo>,</mo><mn>15</mn></mrow></mfenced><csymbol definitionURL="http://.../units/meter#c">cm</csymbol></mrow></mfenced><mo>*</mo><mi>h</mi></math></input></command><command><input><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>x</mi><mo> </mo><mo>=</mo><mo> </mo><mfrac><mrow><mn>2</mn><mo>*</mo><mi>A</mi></mrow><mi>h</mi></mfrac><mo>-</mo><mn>2</mn><csymbol definitionURL="http://.../units/meter#c">cm</csymbol></math></input></command><command><input><math xmlns="http://www.w3.org/1998/Math/MathML"/></input></command><command><input><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>parameter</mi><mo> </mo><mi>answer</mi><mo> </mo><mo>=</mo><mo> </mo><mn>0</mn></math></input></command><command><input><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>student_base</mi><mo>=</mo><mi>answer</mi><mo>+</mo><mn>2</mn><csymbol definitionURL="http://.../units/meter#c">cm</csymbol></math></input></command><command><input><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>student_area</mi><mo> </mo><mo>=</mo><mo> </mo><mfrac><mrow><mi>student_base</mi><mo>*</mo><mi>h</mi></mrow><mn>2</mn></mfrac></math></input></command></group></library></session>]]></wirisCasSession><correctAnswers><correctAnswer>#x</correctAnswer><correctAnswer id="1">0</correctAnswer></correctAnswers><assertions><assertion name="equivalent_all" correctAnswer="1"/><assertion name="syntax_quantity"><param name="units"><![CDATA[m, s, g, °, ', ", $, ¥, €, £, kr, Fr, ₩, ₹, руб, BTC, %, ‰, A, K, mol, cd, rad, sr, h, min, l, N, Pa, Hz, W, J, C, V, Ω, F, S, Wb, b, H, T, lx, lm, Gy, Bq, Sv, kat]]></param><param name="decimalseparators">., \,</param><param name="unitprefixes">M, k, c, m</param><param name="groupoperators">(,[,{</param></assertion><assertion name="equivalent_symbolic"/></assertions><options><option name="tolerance">10^(-3)</option><option name="relative_tolerance">true</option><option name="precision">4</option><option name="times_operator">·</option><option name="implicit_times_operator">false</option><option name="imaginary_unit">i</option><option name="answer_parameter">true</option></options><localData><data name="inputField">inlineEditor</data><data name="gradeCompound">and</data><data name="gradeCompoundDistribution"></data><data name="casSession"></data></localData></question>