y=(6x+2)^4y'=4(6x+2)^3.(6)=24(6x+2)^3y''=72(6x+2)^2.(6) =432(6x+2)^2
y＝(6x＋2)⁴y'＝4(6x＋2)³×6＝24(6x＋2)³y''＝72(6x＋2)²×6＝432(6x＋2)²
