1-cost的平方等於多少？∫1-cost^2 dt
=∫sint^2 dt=tsint^2-∫tdsint^2=tsint^2-2∫t^2*cost^2dt=tsint^2-2∫t^2(1-sint^2)dt=tsint^2-2∫t^2dt+2∫t^2sint^dt=tsint^2-2t^3/3-∫td(cost^2)=tsint^2-2t^3/3-tcost^2+∫cost^2dt∫1-cost^2 dt
=∫sint^2 dt=tsint^2-∫tdsint^2=tsint^2-2∫t^2*cost^2dt=tsint^2-2∫t^2(1-sint^2)dt=tsint^2-2∫t^2dt+2∫t^2sint^dt=tsint^2-2t^3/3-∫td(cost^2)=tsint^2-2t^3/3-tcost^2+∫cost^2dt
1-cost的平方等於多少？∫1-cost^2 dt
=∫sint^2 dt
=tsint^2-∫tdsint^2
=tsint^2-2∫t^2*cost^2dt
=tsint^2-2∫t^2(1-sint^2)dt
=tsint^2-2∫t^2dt+2∫t^2sint^dt
=tsint^2-2t^3/3-∫td(cost^2)
=tsint^2-2t^3/3-tcost^2+∫cost^2dt∫1-cost^2 dt
=∫sint^2 dt
=tsint^2-∫tdsint^2
=tsint^2-2∫t^2*cost^2dt
=tsint^2-2∫t^2(1-sint^2)dt
=tsint^2-2∫t^2dt+2∫t^2sint^dt
=tsint^2-2t^3/3-∫td(cost^2)
=tsint^2-2t^3/3-tcost^2+∫cost^2dt