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lisabon 2012 [21]
2 years ago
13

1) Find f(x) if it is known that f(5a)=5a−2. 2) Find g(x) if it is known that g(2t)=8t−1.

Mathematics
2 answers:
siniylev [52]2 years ago
5 0

Answer:

Step-by-step explanation:

One

f(5a) means that wherever you see an x, you put in 5a

x = 5a

f(x) = x/5t *  5t - 2

f(x) = x - 2

===============

Two

g(2t) = 8t - 1

x = 2t

g(x) = 8t/2t*x - 1

g(x) = 4x - 1

lyudmila [28]2 years ago
4 0

1)for the first one you can put a=(1/5)a in the function and it will be:

f(a) = a - 2

so in a function , alphabet is not important and you can rewrite it to this:

f(x) = x - 2

2)the same as the first , we can put t=(1/2)t and conclusion is :

g(t) = 4t - 1

and then change the t to x:

g(x) = 4x - 1

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