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Math-Chapter 12
Stack #128631
Question | Answer |
---|---|
Numerically | switch elements in ordered pairs |
graphically | reflect graph about y=x |
analytically (alg) | 1) switch x & y. 2)sovle for y in terms of x |
analytically (nonalg) | y=f(x)...y=f-1(x) <=> x=f(y) |
b>1 | exponential growth |
0<b<1 | exponential decay |
y=b^x...x=b^y <<this epuals: | y=log'b'x |
what is f-1 of y=4^x? | y=log'4'x OR x=4^y |
log(AB)= | log(A)+log(B) |
log(A/B)= | log(A)-log(B) |
log(A^K)= | Klog(A) |
Base Change Formula | log'b'N=log'a'N/log'a'b |
Formula for dB and sound intensity problems | dB=10(logi/i0) where i0=10^-12 |