And

Q30: Solve the matrix equation: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB6578/.jpg" alt="Solve

Q31: Without solving,determine whether the following system of

Q32: If A = <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB6578/.jpg" alt="If A

Q33: If <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB6578/.jpg" alt="If ,then

Q34: Let A = <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB6578/.jpg" alt="Let A

Q36: For one animal,she determines that she needs

Q37: Solve by the method of reduction: <img

Q38: If A = <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB6578/.jpg" alt="If A

Q39: If A = <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB6578/.jpg" alt="If A

Q40: Use the encoding matrix <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB34225555/.jpg" alt="Use