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Dealing with functions in Numbas. (Translation to German.)

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Funktionen

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  1. Das Numbas-System erkennt alle \"Standardfunktionen\", aber Sie müssen Klammern setzen, zum Beispiel  sin(x) statt sin x, ln(a) statt ln a.
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  3. Den Absolutbetrag der Zahl $a$, den wir üblicherweise als $|a|$ schreiben, müssen Sie als abs(a) eingeben.
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  5. Die Umkehrfunktionen $\\arcsin(x)$, $\\arccos(x)$ und $\\arctan(x)$ der trigonometrischen Funktionen werden auch erkannt, und können wie die anderen Funktionen eingegeben werden: arccos(x) ...
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Hier sind einige Beispiele, an denen Sie es ausprobieren können.

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(Um Hilfe dazu zu erhalten, klicken Sie Antworten aufdecken. Sie können die Aufgabe danach noch einmal mit veränderten Werten bearbeiten.)

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Die korrekten Eingaben sind (es gibt natürlich auch Varianten, die ebenfalls korrekt sind, probieren Sie ruhig mal ein bisschen herum): 

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a)

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  1. sin(cos({a}x)+{b})
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  3. cos(sin({a}x + {b}))
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b)

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  1. abs((x + {c}) / (x + {d}))
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  3. ln(abs((x + {a}) / (x + {d})))
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c)

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  1. {a}t^({-b})*e^({-c}t)*sin({b}t) + (s + {d}t ^ 3)*e ^ ({c}t)
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  3. arctan(({c}y ^ 2 + {d}) / ((x + {a})*(y + {b})))
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Geben Sie die folgenden Funktionen ein:

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  1. $\\sin(\\cos(\\var{a}x)+\\var{b})$: [[0]]
  2. \n
  3. $\\cos(\\sin(\\var{b}x)+\\var{a})$: [[1]]
  4. \n
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Geben Sie die folgenden Funktionen ein:

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  1. $\\displaystyle \\simplify[all]{Abs((x + {c}) / (x + {d}))}$: [[0]]
  2. \n
  3. $\\displaystyle \\simplify[all]{ln(Abs((x + {a}) / (x + {d})))}$: [[1]]
  4. \n
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Geben Sie die folgenden Funktionen ein:

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  1. $\\simplify[all]{{a} * t ^ { -b} * e ^ (( -{c}) * t) * Sin({b} * t) + (s + {d} * t ^ 3) * e ^ ({c} * t)}$: [[0]]
  2. \n
  3. $\\displaystyle \\simplify[all]{arctan(({c} * y ^ 2 + {d}) / ((x + {a}) * (y + {b})))}$: [[1]]
  4. \n
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