Question

规定f（a,b）=丨a丨+b,如f（-5,-9）=丨-5丨+（-9）=5+（-9）=-4.试求f【-3,f（8,12）】

Answer 1

f(a,b)=|a|+b

f(-5,-9)=|-5|-9=5-9=-4

∴

先求f(8.12)

f(8,12)

=|8|+12

=8+12

=20

f[-3,f(8.12)]

=f(-3.20)

=|-3|+20

=3+20

=23