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Chantamariepaul
25.10.2019 •
Mathematics
Find the inverse of the given function
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Ответ:
Step-by-step explanation:
The inverse of a function can be easily calculated isolating Y and then changing the variables ( X by Y and viceversa).
So we are going to isolate Y from our equation:![y=\frac{5x+1}{-x+7} \\y. (-x+7)=5x+1 \\\\-xy+7y=5x+1\\-xy-5x=1-7y\\x. (-y-5) = 1-7y\\x=\frac{1-7y}{-y-5}\\ \\](/tpl/images/0346/1660/89e5e.png)
Now we change the variables and we get:
Ответ:
$36
Step-by-step explanation:
because 45/5 equals 9
and 9x4= 36
the denominator (the bottom number) you divide
the numerator(the top number) you multiple