求投影點詳解

Mind 聚 解 焦4 投影點與對稱點 試求點4(2,1)關於直線L:x-2y+ 5 = 0 的: (1)投影點 M的坐標為(13)。 (2)對稱點 4'的坐標為(05)。 ND BUL : (1)↓2X+y-5=0 X88-X A (4) lx-2y+5=0 J (2+2 1+1 ) = (1.3) HAL X=1,y=3+3+xm=(只和m X=0.y:5 cm

想問最上面那題的“keep”可不可以換成“stay”呢？謝謝🙏

Game 4.1 每天閱讀報紙是讓心智保持活躍和及時掌握時事的好方法。 current events great keep abreast of Reading newspaper every day is a active mind energnic and keep abreast of current events. 4.2 報紙上的填字遊戲和數獨(Sudoku)也是很好的腦力鍛鍊,可以讓人消磨時間。 ( keep the good way to stay your The crossword puzzles and Sudoku are also good mental exercise [ can let people killed time.] for in the newspaper <that allow people to kill time. have Collecting baseball cards 5.1 自從我成為棒球迷,我一直在蒐集棒球卡。 been -ing [Since I became a baseball fan] I continuely collectect

求解此題 高二三角函數 答案為d>c>b>a

ca a 4元 517! 31 10.設d= tan 76 5 3t b = tan 4 c=tan , d = tan 9 ,則a,b,c,d的大小關係為 4 3 tan 108 3 tan 135° 45° = otan 45 fan 2250 tan nou -Otan 60 13 mind的大小關係為 b> a led

求

六、文意選填:10%(〈請忽略選項大小寫 ) We al know that Sleep is very important for us. However have yo r whole day from the minute CVer AN呈 ting enough Sleep? Activitles these days fill up oul that we wake up. 一2. , we realtty need enoueh Sleep toOr Gur body and mind to get enough rest. All living things need sleep to 一3 and that incluqes us. Some _4. believe 了at our brain is working to OrganiZe information white we"'re asleep. 5, actty nine and a you are teenagers today sleep for about seven hours, but most of them need cx ay. That is Why the State of California just Tecently paSSed ala quarter hours of sleep a d S:30 a.m. for high schoots andq 0! saying that the first-period bell can ring no earlier thaw am. for middle sehools. (A) survive_(B) wondered (0) secientists (Dy) therefore (5) on average 必 2 8 4 Sy

想問這題數學 這個要怎麼因式分解阿? 因為像國中的十字交乘都還可以透過 常數項跟一次項 去推要誰乘誰 但是這個 看不出來阿阿///// 有什麼方法嗎///

同人 別上 國 人/譯 呈 圖 圖加 圖圖 時 【解】 國MINDENDOON上你 xy11 8 -eo+0leg la)1+5 際, =(oy+1D7+(Cx+y)Coy+1D+詞 三(xy十十D(y十十1 圖圖 圖 人圖 晤- 圖 一