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**Eandrews** Have a few questions that have to deal with logarithims. I dont quite understand them all and need some help. The first question is

1. Use what you know about polynomials to find the maximum value of the function. *F(x)= 3+4x^2 - x^4 (Hint*: set t=x^2)

Mr F says: The maximum value of F(x) is the same as the maximum value of G(t) = 3 + 4t - t^2. Do you know how to find the maximum value of a parabola?

[snip]

5. Find the following;

a. f(x) = ln(ln(ln x)

b. f(x) = log base 2(log base 10(x))

Mr F says: What are you meant to find ....?

6. Use the change of base formula to show that

a. Log base 10 = (1/ln 10) Mr F says: Log base 10 of what ....? Either the argument of the log is missing or the base is missing ....