Question

Sebuah fungsi f dirumuskan f(x) = x²- 4

a. Hitunglah f(- 3) , f(5) , dan f(½)!

b. Tentukan p bila f (p) = 0 !

bantu jawabb yah!!​

Answer 1

Penjelasan dengan langkah-langkah:

[tex]f(x) = {x}^{2} - 4 \\ f(3) = {3}^{2} - 4 = 9 - 4 = 5 \\ f(5) = {5}^{2} - 4 = 25 - 4 = 21 \\ f( \frac{1}{2} ) = ( \frac{1}{2} ) ^{2} - 4 = \frac{1}{4} - \frac{16}{4} = - \frac{15}{4} [/tex]

[tex]f(p) = {p}^{2} - 4 = 0 \\ {p}^{2} = 4 \\ p = 4 \: \: atau \: p \: = - 4 [/tex]