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Hvis;

[tex]f(2x-3) = 2x-1800[/tex]
hva er:
[tex]f(2019)[/tex]?

2x - 3 = 2019 " ekvivalent " 2x = 2019 + 3 = 2022

f( 2019 ) = f( 2022 - 3 ) = 2022 - 1800 = 222

Mattegjest skrev:2x - 3 = 2019 " ekvivalent " 2x = 2019 + 3 = 2022

f( 2019 ) = f( 2022 - 3 ) = 2022 - 1800 = 222

ja