4 Logarithmic Functions Every function of the form f (x) = a x passes the Horizontal Line Test and therefore must have an inverse function. This inverse function is called the logarithmic function with base a. 5 Logarithmic Functions The equations y = log a x and x = a y are equivalent.
Measles, Mumps and Rubella (MMR) vaccine. Disadvantages to the MMR vaccine. A vaccine, like any medicine, is capable of causing serious problems, such as severe allergic reactions.The risk of MMR vaccine causing serious harm, or death, is extremely small.Mild problems include: Fever (up to 1 person out of 6) Mild rash (about 1 person out of 20) Swelling of glands in the cheeks or neck (rare) If these problems occur, it is usually within 7-12 days after the shot. Moderate problems include:he risk of MMR vaccine causing serious harm, or death, is extremely small. Mild problems include: Fever (up to 1 person out of 6) Mild rash (about 1 person out of 20) Swelling of glands in the cheeks or neck (rare) If these problems occur, it is usually within 7-12 days after the shot. Moderate problems include:
The MMR vaccine protects children against measles, mumps, and rubella. These are dangerous, even deadly diseases. Before the vaccine was approved in 1963, almost everyone got measles by the age of 18. In Canada, there were about 300,000 cases of measles every year.Since the vaccine, that number has fallen to less than 20 cases a year. Children should get the MMR shot twice to have ongoing protection from infection. Provinces vary on the timing for the second shot. 1  The first shot is given at 12 months of age.n Canada, there were about 300,000 cases of measles every year. Since the vaccine, that number has fallen to less than 20 cases a year. Children should get the MMR shot twice to have ongoing protection from infection. Provinces vary on the timing for the second shot. 1  The first shot is given at 12 months of age.