tolong dijawab secepatnya ya!!

Lihat lampiran saya, smoga membantu

[tex]\displaystyle 1\\\theta(t)=\int\omega(t)\,dt\\\theta(t)=\int9t^3-2t^2+4t\,dt\\\boxed{\boxed{\theta(t)=\frac94t^4-\frac23t^3+2t^2}}\\\\\theta(2)=\frac94(2)^4-\frac23(2)^3+2(2)^2\\\theta(2)=36-\frac{16}3+8\\\theta(2)=\frac{132-16}3\\\boxed{\boxed{\theta(2)=\frac{116}3\,\text{rad}}}[/tex]

[tex]\displaystyle 2\\\theta(2)=3(2)^4+2(2)^3\\\theta(2)=48+32\\\boxed{\boxed{\theta(2)=80\,\text{rad/s}}}\\\\\alpha(t)=\theta'(t)\\\alpha(t)=12t^3+6t^2\\\alpha(4)=12(4)^3+6(4)^2\\\alpha(4)=96+96\\\boxed{\boxed{\alpha(4)=192\,\text{rad/s}^2}}[/tex]