Ответ:
Объяснение:
1) f(x) =u(x)/v(x) => f'(x)= (u' (x)*v(x)-v '(x)*u(x))/ v²(x)
u(x)=[tex]e^x v(x)=ln(x) = > u' (x) = e^x v'(x)= 1/x[/tex]
=>f(x)=([tex]e^x[/tex]· lnx - [tex]e^x[/tex]/x) /( ln x)² =(x·[tex]e^x[/tex]·ln x - [tex]e^x)[/tex]/(x· (ln x)²)
2) f(x) = u(x)·v(x)+ C => f'(x) = u '(x)·v(x)+u(x)·v '(x) +0
u(x)= x => u'(x)=1 v(x)= [tex]e^x = > v' (x)= e^x[/tex]
=> f'(x) = [tex]e^x+x*e^x[/tex]
3) f(x)= [tex]7^x/x^5 = 7^x*x^-^5[/tex]
f(x)=u(x)·v(x) => f'(x) = u '(x)·v(x)+u(x)·v '(x)
u(x)=[tex]7^x = > u'(x)= 7^x*ln7[/tex] v(x)= x[tex]^-^5 = > v'(x)= -5*x^-^6[/tex]
f'(x) = [tex]7^x*lnx*x^-^5 -5*x^-^6*7^x[/tex]
4) f(x)= u(x)·v(x) +g(x) => f'(x) = u '(x)·v(x)+u(x)·v '(x) +g'(x)
u(x)=10x => u'(x)=10 v(x)=[tex]e^x = > v'(x)=e^x[/tex] g(x)=4x² g'(x)=8x
f'(x) = 10·[tex]e^x +10x*e^x +8x[/tex]
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Answers & Comments
Ответ:
Объяснение:
1) f(x) =u(x)/v(x) => f'(x)= (u' (x)*v(x)-v '(x)*u(x))/ v²(x)
u(x)=[tex]e^x v(x)=ln(x) = > u' (x) = e^x v'(x)= 1/x[/tex]
=>f(x)=([tex]e^x[/tex]· lnx - [tex]e^x[/tex]/x) /( ln x)² =(x·[tex]e^x[/tex]·ln x - [tex]e^x)[/tex]/(x· (ln x)²)
2) f(x) = u(x)·v(x)+ C => f'(x) = u '(x)·v(x)+u(x)·v '(x) +0
u(x)= x => u'(x)=1 v(x)= [tex]e^x = > v' (x)= e^x[/tex]
=> f'(x) = [tex]e^x+x*e^x[/tex]
3) f(x)= [tex]7^x/x^5 = 7^x*x^-^5[/tex]
f(x)=u(x)·v(x) => f'(x) = u '(x)·v(x)+u(x)·v '(x)
u(x)=[tex]7^x = > u'(x)= 7^x*ln7[/tex] v(x)= x[tex]^-^5 = > v'(x)= -5*x^-^6[/tex]
f'(x) = [tex]7^x*lnx*x^-^5 -5*x^-^6*7^x[/tex]
4) f(x)= u(x)·v(x) +g(x) => f'(x) = u '(x)·v(x)+u(x)·v '(x) +g'(x)
u(x)=10x => u'(x)=10 v(x)=[tex]e^x = > v'(x)=e^x[/tex] g(x)=4x² g'(x)=8x
f'(x) = 10·[tex]e^x +10x*e^x +8x[/tex]