已知试求内积

已知平面不可压缩液体的流速分量为u_x=1-y，u_y=t，试求：

在图16.26所示电路中,已知<img src='https://img2.soutiyun.com/ask/2020-10-06/970865523313676.png' />,试求输出电压u。 <img src='https://img2.soutiyun.com/ask/2020-10-06/970865474211867.png' />

已知<img src='https://img2.soutiyun.com/ask/2020-10-22/972222989728211.png' />试求f(x)中x²的系数。

电路如图题 10-6所示,已知<img src='https://img2.soutiyun.com/ask/2020-07-24/964447303300445.png' />,试求u(t)。 <img src='https://img2.soutiyun.com/ask/2020-07-24/964447314547089.png' />

在图3-23所示的电路中，已知<img src='https://img2.soutiyun.com/ask/2020-11-14/974192768614519.png' />试求I₃。 <img src='https://img2.soutiyun.com/ask/2020-11-14/974192781086232.png' />

如题图E3-19所示电路，已知<img src='https://img2.soutiyun.com/ask/2020-11-14/974193896718043.png' />试求电流i。 <img src='https://img2.soutiyun.com/ask/2020-11-14/974193908480716.png' />

图题11-3所示电路中,已知<img src='https://img2.soutiyun.com/ask/2020-07-24/964450491997828.png' />,试求输出电压u(t)。 <img src='https://img2.soutiyun.com/ask/2020-07-24/964450470432595.png' />

已知(1)<img src='https://img2.soutiyun.com/ask/2020-08-25/967216413058374.png' />试求它们的特征根。

已知：孔<img src='https://img2.soutiyun.com/shangxueba/ask/17865001-17868000/17865582/2014111509404962900.jpg' />为与轴<img src='https://img2.soutiyun.com/shangxueba/ask/17865001-17868000/17865582/2014111509410370015.jpg' />为相配合。 试求：孔与轴相配合时的最大间隙和最小间隙各是多少？

已知逻辑函数<img src='https://img2.soutiyun.com/ask/2020-12-29/978109112174599.png' />，试求其对应的真值表。

题图11-5所示电路中，已知<img src='https://img2.soutiyun.com/ask/2020-07-07/962977146182334.png' />试求20Ω电阻吸收的平均功率。 <img src='https://img2.soutiyun.com/ask/2020-07-07/962977155298856.png' /><img src='https://img2.soutiyun.com/ask/2020-07-07/962977161434207.png' /><img src='https://img2.soutiyun.com/ask/2020-07-07/962977167285541.png' />