圆半径 [tex=7.071x1.143]Hsprc0EfyTNswJKl+FxITY8nBPNAn2MCW1wGZ6JbgFo=[/tex] 若取 [tex=3.143x1.0]FH2xS6OF723sqQ4VNXWgrw==[/tex], 则求出的圆面积和最小相对误差是多少?

2022-06-17

圆半径 [tex=7.071x1.143]Hsprc0EfyTNswJKl+FxITY8nBPNAn2MCW1wGZ6JbgFo=[/tex] 若取 [tex=3.143x1.0]FH2xS6OF723sqQ4VNXWgrw==[/tex], 则求出的圆面积和最小相对误差是多少?

答案：

解  圆面积 [tex=11.571x1.571]X/kZPWVDLdHaMBHeIYzPil0YFtiDVr/OpOGC+9Arav6sadbTxyqyWeMeVhK1sAC3OmjXlAb2mZv6cYuJdqIfCA==[/tex] [br][/br]            [tex=15.5x5.071]rZM5/OPAdr7aX+kNl9iwpI8gB3WWq+DuSSfICdIc4zh7qPchKtmh3sVGmY0XYS4As67jyIgkw4HZ7eyrpRfNlvelGDV1tF8R99YGwMvzPEkYY/ks6Q6rpKL+GF4iFfVspgn6YFPS0DKYUxdJ3YYF0Lsj1ejCy69UTzvJv7zzISJLyr7T2+me1XYrOLgWmL9D2r7Nafof0Kwq9mcmGxR6M4Ak35cA3E+rYxRvQ6+gWAfaCC7Xj6wyEzjiWl1qNABwGHh6UBOiHQl9qKsAt60hjAMzUuLdr7Kqv/rsW/EW1u45MlbRMokatrd9ulyoDwIvJ7PMHm8V6c1lb6uhnuNIDA==[/tex][br][/br]即一般的圆面积 [tex=0.786x1.0]b4HkKtHXeHofHX/gJc8Agg==[/tex] 为 [tex=9.0x1.571]f2+7i40VDJL84LM0ElZeLnmWe+acIKAAMsXQfcyLxUKAyR0KvrR6qEm6nkVNh/pi[/tex], 故[br][/br]                       [tex=8.857x2.357]hpKcSl1VoLBcDS9eS+uxnqkRrCHIwEDUYj9oXSEQbyqlXyprGKI5CLdmx97kyUw4nP6VnqNis3lj2rpxznRVnA==[/tex]

举一反三

内容

0
若圆半径以[tex=2.714x1.357]GPZHcDHTeeGJwoeLbIV0b64rvV/H1+7F81dtu4xi24c=[/tex]的速度匀速增加,则当圆半径[tex=3.857x1.0]dJfUcY/sOwBd1aYYI+eYYOeLp6p0xHlxCnR6Twfbc5o=[/tex]时,圆面积增加的速度如何?
1
对 [tex=0.643x0.786]/he/ol8BkDuTTL9yMPtH4Q==[/tex]的不同值，分别求出循环群[tex=1.143x1.214]StMMJ6qThnpokZJIPGrdFyP3vrLnUdltYxmLxjw8za8=[/tex]的所有生成元和所有子群。(1) 7; (2) 8; (3)10 ;(4) 14 ; (5) 15 (6) 18 。
2
[1097]有半径为[tex=4.357x1.0]I3UXhv4UvARPmg87bNFXtuH4FbjMya9txsmenB1YIvE=[/tex]及圆心角[tex=2.857x1.071]8b+QXU+cRVRpa3PN2+AqHxzlDADWV22HGfO0gD0x3bU=[/tex]的扇形.若(1)其半径R增加1cm; (2)角[tex=0.643x0.786]SPoVA3bJlgfP9Ek9O4AbuA==[/tex]减小30’,则扇形面积的变化如何?求出精确的和近似的解.
3
判断下列命题是否为真：（1）[tex=3.643x1.357]/5abqJjwKZ1qr+6hsVFF5EBvfq3ggOFNlHMClz0h9nk=[/tex]（2）[tex=2.929x1.357]rGJpyjIjJpbcoBTWxP0Jiw==[/tex]（3）[tex=4.5x1.357]2wycHMoqU83MyEp17iBils58bR7YLuCTI2G9NVAdlfY=[/tex]（4）[tex=5.214x1.357]CTz2gu+IIm1GgNmYMGaduCRtA41wnW4WqwRWwEhq6aA=[/tex]（5）[tex=4.857x1.357]1DcE2BMMOaZhTuxR/mjgsboXxfg5ET59Dp4I/jjEDuw=[/tex]（6）[tex=4.643x1.357]BSryrsQYOvTP2hTWRu6t4nAuJwlSs4L9jaq70EpB+Us=[/tex]（7）若[tex=6.0x1.357]y0IZLUnBO88nR8WBZYvd7QXv5S1OMINV5cQNzPyiyAc=[/tex]，则[tex=3.429x1.357]1brfPwTkVVIX4GfoMIUskA==[/tex]（8）若[tex=7.643x1.357]MhLfJXZnhbXiB0x3oNtFzThV4Y1mJxe1VYr7PkJE/T6hmTD3WWp+UxbNwvUQ6DHk[/tex]，则[tex=4.143x1.357]LZUA94ISo1po5HWsOVeBCjo0rMvj7uw3bGw5HiZenrI=[/tex]
4
若圆半径以[tex=2.786x1.357]D4/62Ys/ex01KyOzoYUa4g==[/tex]等速度增加，求圆半径为[tex=2.357x1.0]YoPtFffIdAronID3wvY7qg==[/tex]时圆面积增加的速度.