naha98
naha98
08-10-2016
Mathematics
contestada
f(x)=√(10-3x) find the formula
Respuesta :
lando15345
lando15345
08-10-2016
let y=f(x)
y=sqrt(10-3x)
you want to make x the subject
square both sides
y²=10-3x
3x=10-y²
x=(10-y²)/3
now replace y with x
f^-1(x)=(10-x²)/3
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