mathematics logs
posted by malcolm .
which three statements are true?
a) if x= 10^4 then log 10 = 4
b)if x= 2^8 then log 2x = 8
c) log2 2= 4
d) if x= 3 then log10 3=x
e) log 10 2562log 10 a/log 10 b
f)log 10 (ab)= log 10 a/log 10 b
g) the gradient of the graph of y= 2x^x at x= 2 is 2e^e
h) the gradient of the graph of y= e^x at x= 2is 2e
I am struggling with this one but am thinking d and definately not c? but I don't know all 3
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