解方程 { (5—a)²+(1—b)²=r² (7—a)²+(—3一b)²=r²解方程 { (5—a)²+(1—b)²=r² (7—a)²+(—3一b)²=r² (2—a)²+(一8一b)²=r² 需详细过程
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/30 00:44:50
![解方程 { (5—a)²+(1—b)²=r² (7—a)²+(—3一b)²=r²解方程 { (5—a)²+(1—b)²=r² (7—a)²+(—3一b)²=r² (2—a)²+(一8一b)²=r² 需详细过程](/uploads/image/z/2539314-18-4.jpg?t=%E8%A7%A3%E6%96%B9%E7%A8%8B+%7B+%285%E2%80%94a%29%26%23178%3B%2B%281%E2%80%94b%29%26%23178%3B%3Dr%26%23178%3B+%287%E2%80%94a%29%26%23178%3B%2B%28%E2%80%943%E4%B8%80b%29%26%23178%3B%3Dr%26%23178%3B%E8%A7%A3%E6%96%B9%E7%A8%8B+++%7B+%285%E2%80%94a%29%26%23178%3B%2B%281%E2%80%94b%29%26%23178%3B%3Dr%26%23178%3B+++++%287%E2%80%94a%29%26%23178%3B%2B%28%E2%80%943%E4%B8%80b%29%26%23178%3B%3Dr%26%23178%3B+++++%282%E2%80%94a%29%26%23178%3B%2B%28%E4%B8%808%E4%B8%80b%29%26%23178%3B%3Dr%26%23178%3B++++++%E9%9C%80%E8%AF%A6%E7%BB%86%E8%BF%87%E7%A8%8B)
解方程 { (5—a)²+(1—b)²=r² (7—a)²+(—3一b)²=r²解方程 { (5—a)²+(1—b)²=r² (7—a)²+(—3一b)²=r² (2—a)²+(一8一b)²=r² 需详细过程
解方程 { (5—a)²+(1—b)²=r² (7—a)²+(—3一b)²=r²
解方程 { (5—a)²+(1—b)²=r² (7—a)²+(—3一b)²=r² (2—a)²+(一8一b)²=r² 需详细过程
解方程 { (5—a)²+(1—b)²=r² (7—a)²+(—3一b)²=r²解方程 { (5—a)²+(1—b)²=r² (7—a)²+(—3一b)²=r² (2—a)²+(一8一b)²=r² 需详细过程
(5—a)²+(1—b)²=r²
(7—a)²+(—3一b)²=r²
(2—a)²+(一8一b)²=r²
②-①:24-4a+8+8b=0,得a-2b=8 ④
③-①:-21+6a+63+18b=0,得a+3b=-7 ⑤
④-⑤:-5b=15,得b=-3
代入④:a=2b+8=2
代入①:r²=3²+4²=25
即a=2,b=-3,r²=25