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seiga
Group Title
...Given f(x)= X ^2 and g(x)= 2^x
a) the inverse of g is a function, but the inverse of f is no a function. Explain why this statement is true.
b) Find g ^1(f (3) ) to the nearest tenth
please help! i really tried to do it but i can't find a similar problem in my notes :SS
 one year ago
 one year ago
seiga Group Title
...Given f(x)= X ^2 and g(x)= 2^x a) the inverse of g is a function, but the inverse of f is no a function. Explain why this statement is true. b) Find g ^1(f (3) ) to the nearest tenth please help! i really tried to do it but i can't find a similar problem in my notes :SS
 one year ago
 one year ago

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ZeHanz Group TitleBest ResponseYou've already chosen the best response.0
With a function, it works this way: you put in a number, do the math and out comes another number. With 2^x it is just like this. The reverse is also true: if you have some number that is the outcome of 2^x, there is always just one x with which you started. E.g: 2^3=8. If you work back from 8 you only get 2. With x^2 it is just a little different: you put in 2, out comes 4. No problem. But if 4 is an outcome, you have to choose between two numbers: it could that you put in 2, but it also could have been 2: (2)^2 =4. x^2 has no inverse, because you do not have a unique origin of a number. Compare this with 2^x...
 one year ago

seiga Group TitleBest ResponseYou've already chosen the best response.0
okay thanks...
 one year ago

seiga Group TitleBest ResponseYou've already chosen the best response.0
(:.. thanks a lot.
 one year ago

ZeHanz Group TitleBest ResponseYou've already chosen the best response.0
yw! Hope you understand now...
 one year ago

seiga Group TitleBest ResponseYou've already chosen the best response.0
kind of...who cares i never really understood it..
 one year ago
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