$Ifsin(-4x+3y+z)=0,$ use implicit differentiation $to$ find the first partial

derivatives $\frac{\text{d}\text{e}\text{l}\text{z}}{\text{d}\text{e}\text{l}\text{x}}$ and $\frac{\text{d}\text{e}\text{l}\text{z}}{\text{d}\text{e}\text{l}\text{y}}at$ the point $(0,0,0).$

$A.\frac{\text{d}\text{e}\text{l}\text{z}}{\text{d}\text{e}\text{l}\text{x}}(0,0,0)=$

$B.\frac{\text{d}\text{e}\text{l}\text{z}}{\text{d}\text{e}\text{l}\text{y}}(0,0,0)=$