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Forum Maschinenbau Rostock • Thema anzeigen - 17.2 b.)
Seite 1 von 1

17.2 b.)

BeitragVerfasst: Do 28. Apr 2011, 16:46
von Schnorrie
a.)

z=7x+2

Int( z^(1/4) * 1/7 dz)

Int(z^1/4)= 4/5*z^(5/4)

> 1/7 * 4/5 * z^(5/4) +c= 5/28 * z^(5/4)+c

dann rücksubstitution

...

Re: 17.2

BeitragVerfasst: Do 28. Apr 2011, 16:49
von Schnorrie
b.)

z=5x+2

= Int(1/(cos(z) * 1/5 dz)

= tan(z) *1/5 +c

rücksubstitution

=tan(5x+2)*1/5 +c

Re: 17.2 b.)

BeitragVerfasst: Do 28. Apr 2011, 17:00
von Schnorrie
c.) dat teil hat ja die Form Int(f'(x)/f(x)dx)

nach einer integrationsregel folgt dann

ln|f(x)|+c



... ka wie man das anders machen soll^^

Falls es einen interessiert da hab dich die regel her

http://www.krauseplonka.de/math_onl/ma1 ... regeln.htm

Re: 17.2 b.)

BeitragVerfasst: Do 28. Apr 2011, 17:41
von Der Dachs
schnorrie...bei b)a) is dir ein fehler unterlaufen....1/7*4/5=4/35....

Re: 17.2 b.)

BeitragVerfasst: Do 28. Apr 2011, 19:28
von Schnorrie
xDD ouhh man danke :)

Re: 17.2 b.)

BeitragVerfasst: Mo 5. Jan 2015, 11:29
von caydaAtes
das gleichungssystem soll gelöst werden...dieses haben wir zuvor mir hilfe der determinante berechnet, dieses würde aber bei dieser matrix zu keinem ergebniss führen, da die determinante 0 ist (divison durch 0 geht nicht!). also besitzt das gleichungssystem eine homogene und inhomogene lösungsstruktur, welche es zu bestimmen gilt.... demnach ist es nicht notwendig den rang zu ermitteln



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