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Консультация № 67349
17.12.2006, 12:03
0.00 руб.
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Уважаемые эксперты, очень прошу, пожалуйста, немоглибы вы помочь сделать данное задание! С уважением xDRIVE.
1) Найти область определения функции, заданных в:
1. f(x) = 3/x^2-13x+12
2. f(x) = √(10-2x) + √(x-7)
3. f(x) = arcsin(3x+4)
4. f(x) = log(снизу 3) (5+x)- x/x-3+√x
1) Найти область определения функции, заданных в:
1. f(x) = 3/x^2-13x+12
2. f(x) = √(10-2x) + √(x-7)
3. f(x) = arcsin(3x+4)
4. f(x) = log(снизу 3) (5+x)- x/x-3+√x
Обсуждение
Неизвестный
17.12.2006, 12:18
общий
это ответ
Здравствуйте, XDRIVE!
1) область определения этой функции - все действительные числа кроме х=1 и х=12, так как при них знаменатель равен 0
2) (я так понимаю, что это корень плюс корень?) если так, то решение:
10-2x>=0; x<=5. а также
x-7>=0; x>=7
Тогда ответ: область определения - пустое множество
3) -1<=3x+4<=1
-5/3<=x<=-1
4)здесь я бы попросила скобки расставить, иначе не понятно что на что здесь делится
1) область определения этой функции - все действительные числа кроме х=1 и х=12, так как при них знаменатель равен 0
2) (я так понимаю, что это корень плюс корень?) если так, то решение:
10-2x>=0; x<=5. а также
x-7>=0; x>=7
Тогда ответ: область определения - пустое множество
3) -1<=3x+4<=1
-5/3<=x<=-1
4)здесь я бы попросила скобки расставить, иначе не понятно что на что здесь делится
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