已知,,则三角形OAB的面积为/ananas/latex/p/1011224/ananas/latex/p/1011233
举一反三
- 已知()=0.4,则()=( )/ananas/latex/p/152/ananas/latex/p/278/ananas/latex/p/847/ananas/latex/p/281/ananas/latex/p/152/ananas/latex/p/4781/ananas/latex/p/7419/ananas/latex/p/6547
- 已知向量组 ,,, 若 ,, 线性相关,则t=./ananas/latex/p/1207466/ananas/latex/p/1207483/ananas/latex/p/1207493/ananas/latex/p/1390/ananas/latex/p/2677/ananas/latex/p/56537
- 已知单位向量满足,则 =/ananas/latex/p/20591/ananas/latex/p/48276/ananas/latex/p/958600
- 已知四阶行列式,则,。/ananas/latex/p/304337/ananas/latex/p/987250/ananas/latex/p/987254
- 已知三角形ABC中,,求/ananas/latex/p/1297889/ananas/latex/p/117