you need to show work b4 help is given.omg precal said:I haven't done this since last year. Someone refresh my memory. Please show me how to do it and fast fast fast! Thanks in advance.
excellent :) the first 2 are ez since now you've solved this one ... the square root one, i'll workomg precal said:ok i think i vaguely remember that if u add logs with the same base, you can multiply what is in the log. that woiuld make it:
log base 4 of x^2 - 9 = 2
meaning 16 = x^2 - 9
meaning x^2 = 25
meaning x = 5
hooray, thanks!
A logarithm is a mathematical function that calculates the power or exponent needed to produce a given number. In other words, it is the inverse of an exponential function.
Logarithms are important in many fields of science, such as physics, chemistry, and engineering. They are used to simplify complex calculations, convert between different units of measurement, and analyze data.
To solve a logarithmic equation, you can use the properties of logarithms, such as the product and quotient rules, to simplify the equation. Then, you can use the properties of exponents to isolate the variable.
Some common uses of logarithms include measuring the intensity of earthquakes and sound waves, pH levels in chemistry, and the loudness of music. They are also used in financial calculations, such as compound interest and population growth.
Some common mistakes when working with logarithms include forgetting to apply the properties of logarithms correctly, mixing up the base of the logarithm, and forgetting to include the absolute value when taking the logarithm of a negative number. It is important to double-check your work and be familiar with the rules of logarithms to avoid these mistakes.