设[tex=3.143x1.357]BNU7QrGb99OWu/H5ydXysg==[/tex]，[tex=3.357x1.357]IRegC8JeIyfoYudk9baNDA==[/tex]和[tex=2.857x1.357]BSu5nfZUDOUmna7U+sUaaA==[/tex]分别为[tex=0.429x0.929]gQzDwVIykgengUJAyMAHkQ==[/tex]时刻的国民收入、总消费和总投资，它们满足如下关系：[tex=13.5x4.214]fnpmC2J6JmQBLyo5NmGAz94SV/L9T8gYwhdCDYxOaTQTOO/jXDyQOzpnr+0icG/LXEnyjVzjkeFv9HJBWUqnhOFk+GYwuMB+e3uWP/GTvOZOvZcMgG08Amwe9vVCtJ0iY/HLBFHf2DnHXmzlhYKYLA==[/tex]其中[tex=0.571x0.786]7G1MINzwputr5mgALyjQfA==[/tex]，[tex=0.429x1.0]dX3JVuFw9r8t2KlWf+/Z+A==[/tex] 和[tex=0.571x1.0]rFc/sfAAuCOtzhevhoREeA==[/tex]为已知常数 ([tex=0.571x0.786]WLga5RWgrUta8vWDwROpYA==[/tex]为最低消费水平，[tex=0.429x1.0]dX3JVuFw9r8t2KlWf+/Z+A==[/tex]为边际消费倾向，[tex=0.571x1.0]UeUhXtQk9UV0/UjLVRoyYw==[/tex]为投资加速数).(1) 求[tex=1.786x1.357]pwoMZxbh9F3LuYS6o4ca9w==[/tex] 、[tex=1.857x1.357]9wQyPg9aaTkeJ16V2WQJVw==[/tex]和[tex=1.643x1.357]m97Nhia2ijBnyvK32wCzbA==[/tex]；(2) 求极限[tex=3.786x2.714]gWiJ+ZX5vxQKlGr93+60wpxXyThghXAnzzwHg03fde4CXTUJt8QHOQmNLEj3sVrW[/tex]， [tex=3.929x2.714]gWiJ+ZX5vxQKlGr93+60wpxXyThghXAnzzwHg03fde6RzlNNpoC7EnRD3z7tPYb4[/tex].