Posted by **malcolm** on Saturday, May 12, 2007 at 8:37am.

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 10 256-2log 10 a/log 10 b

f)log 10 (a-b)= 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 dont know all 3

## Answer this Question

## Related Questions

- math - which three statements are true? a) if x= -10^4 then log 10 = -4 b)if x= ...
- maths - which three statements are true? a) if x= -10^4 then log 10 = -4 b)if x...
- maths - which three statements are true? a) if x= -10^4 then log 10 = -4 b)if x...
- math - Logarithm!!! Select all of the following that are true statements: (a) ...
- maths - 1. Log10²x+log10x²=log10² 2-1 2. Log4(log2x)+log2(log4x)=2 3. X^logx+5/3...
- math - which 3 are correct a) if x= -10^4 then log10 x = -4 b)if x= 2^8 then log...
- Pre Calculs - The pH of a chemical solution is given by the formula pH = -log10...
- Mathematics - Prove that log a, log ar, log ar^2 is an a.p. Is the following ...
- Trigonometry - This is a logs question If u=x/y^2, which expression is ...
- Math - 1. The sequence log2 32, log2 y, log2 128, ... forms an arithmetic ...