Sách Toán – Học Toán – Đề Thi Toán https://booktoan.com Học toán, Đề thi toán, Sách giáo khoa Toán, trắc nghiệm Toán online Wed, 29 May 2019 15:04:16 +0000 vi hourly 1 https://wordpress.org/?v=7.1.3 Đề: Trong không gian với hệ tọa độ Oxyz, cho 3 điểm A(2; 1; 4), B(–2; 2; –6), C(6; 0; –1). Tính tích vô hướng \(\overrightarrow {AB} .\overrightarrow {AC}\). https://booktoan.com/de-trong-khong-gian-voi-he-toa-do-oxyz-cho-3-diem-a2-1-4-b-2-2-6-c6-0-1-tinh-tich-vo-huong-overrightarrow-ab-overrightarrow-ac.html https://booktoan.com/de-trong-khong-gian-voi-he-toa-do-oxyz-cho-3-diem-a2-1-4-b-2-2-6-c6-0-1-tinh-tich-vo-huong-overrightarrow-ab-overrightarrow-ac.html#respond Sun, 26 May 2019 10:55:22 +0000 https://booktoan.com/de-trong-khong-gian-voi-he-toa-do-oxyz-cho-3-diem-a2-1-4-b-2-2-6-c6-0-1-tinh-tich-vo-huong-overrightarrow-ab-overrightarrow-ac.html https://booktoan.com/de-trong-khong-gian-voi-he-toa-do-oxyz-cho-3-diem-a2-1-4-b-2-2-6-c6-0-1-tinh-tich-vo-huong-overrightarrow-ab-overrightarrow-ac.html/feed 0 Đề: Cho ba điểm \(A\left( {1;2; – 3} \right),B\left( { – 4;2;5} \right),M\left( {m + 2;2n – 1;1} \right)\). Điểm M thuộc đường thẳng AB khi và chỉ khi: https://booktoan.com/de-cho-ba-diem-aleft-12-3-rightbleft-425-rightmleft-m-22n-11-right-diem-m-thuoc-duong-thang-ab-khi-va-chi-khi.html https://booktoan.com/de-cho-ba-diem-aleft-12-3-rightbleft-425-rightmleft-m-22n-11-right-diem-m-thuoc-duong-thang-ab-khi-va-chi-khi.html#respond Sun, 26 May 2019 10:55:22 +0000 https://booktoan.com/de-cho-ba-diem-aleft-12-3-rightbleft-425-rightmleft-m-22n-11-right-diem-m-thuoc-duong-thang-ab-khi-va-chi-khi.html https://booktoan.com/de-cho-ba-diem-aleft-12-3-rightbleft-425-rightmleft-m-22n-11-right-diem-m-thuoc-duong-thang-ab-khi-va-chi-khi.html/feed 0 Đề: Xác định m để bốn điểm \(A\left( {1;1;4} \right)\), \(B\left( {5; – 1;3} \right)\), \(C\left( {2;2;m} \right)\) và \(D\left( {3;1;5} \right)\) tạo thành tứ diện. https://booktoan.com/de-xac-dinh-m-de-bon-diem-aleft-114-right-bleft-5-13-right-cleft-22m-right-va-dleft-315-right-tao-thanh-tu-dien.html https://booktoan.com/de-xac-dinh-m-de-bon-diem-aleft-114-right-bleft-5-13-right-cleft-22m-right-va-dleft-315-right-tao-thanh-tu-dien.html#respond Sun, 26 May 2019 10:55:22 +0000 https://booktoan.com/de-xac-dinh-m-de-bon-diem-aleft-114-right-bleft-5-13-right-cleft-22m-right-va-dleft-315-right-tao-thanh-tu-dien.html https://booktoan.com/de-xac-dinh-m-de-bon-diem-aleft-114-right-bleft-5-13-right-cleft-22m-right-va-dleft-315-right-tao-thanh-tu-dien.html/feed 0 Đề: Trong không gian với hệ tọa độ Oxyz, cho ba điểm \(A( – 2;2;1),\,B(1;0;2),\,C( – 1;2;3)\). Tính diện tích tam giác ABC. https://booktoan.com/de-trong-khong-gian-voi-he-toa-do-oxyz-cho-ba-diem-a-221b102c-123-tinh-dien-tich-tam-giac-abc.html https://booktoan.com/de-trong-khong-gian-voi-he-toa-do-oxyz-cho-ba-diem-a-221b102c-123-tinh-dien-tich-tam-giac-abc.html#respond Sun, 26 May 2019 10:55:22 +0000 https://booktoan.com/de-trong-khong-gian-voi-he-toa-do-oxyz-cho-ba-diem-a-221b102c-123-tinh-dien-tich-tam-giac-abc.html https://booktoan.com/de-trong-khong-gian-voi-he-toa-do-oxyz-cho-ba-diem-a-221b102c-123-tinh-dien-tich-tam-giac-abc.html/feed 0 Đề: Trong không gian Oxyz, cho tứ diện ABCD trong đó \(A(2;3;1),{\rm{ }}B(4;1; – 2),{\rm{ }}C(6;3;7),{\rm{ }}D( – 5; – 4;8).\) Tính độ dài đường cao kẻ từ D của tứ diện.  https://booktoan.com/de-trong-khong-gian-oxyz-cho-tu-dien-abcd-trong-do-a231rm-b41-2rm-c637rm-d-5-48-tinh-do-dai-duong-cao-ke-tu-d-cua-tu-dien.html https://booktoan.com/de-trong-khong-gian-oxyz-cho-tu-dien-abcd-trong-do-a231rm-b41-2rm-c637rm-d-5-48-tinh-do-dai-duong-cao-ke-tu-d-cua-tu-dien.html#respond Sun, 26 May 2019 10:55:22 +0000 https://booktoan.com/de-trong-khong-gian-oxyz-cho-tu-dien-abcd-trong-do-a231rm-b41-2rm-c637rm-d-5-48-tinh-do-dai-duong-cao-ke-tu-d-cua-tu-dien.html https://booktoan.com/de-trong-khong-gian-oxyz-cho-tu-dien-abcd-trong-do-a231rm-b41-2rm-c637rm-d-5-48-tinh-do-dai-duong-cao-ke-tu-d-cua-tu-dien.html/feed 0 Đề: Trong không gian hệ tọa độ Oxyz, cho hình chóp S.ABC có \(S\left( {2;2;6} \right),A\left( {4;0;0} \right),B\left( {4;4;0} \right),C\left( {0;4;0} \right)\). Thể tích khối chóp S.ABC là: https://booktoan.com/de-trong-khong-gian-he-toa-do-oxyz-cho-hinh-chop-s-abc-co-sleft-226-rightaleft-400-rightbleft-440-rightcleft-040-right-the-tich-khoi-chop-s-abc-la-2.html https://booktoan.com/de-trong-khong-gian-he-toa-do-oxyz-cho-hinh-chop-s-abc-co-sleft-226-rightaleft-400-rightbleft-440-rightcleft-040-right-the-tich-khoi-chop-s-abc-la-2.html#respond Sun, 26 May 2019 10:55:22 +0000 https://booktoan.com/de-trong-khong-gian-he-toa-do-oxyz-cho-hinh-chop-s-abc-co-sleft-226-rightaleft-400-rightbleft-440-rightcleft-040-right-the-tich-khoi-chop-s-abc-la-2.html https://booktoan.com/de-trong-khong-gian-he-toa-do-oxyz-cho-hinh-chop-s-abc-co-sleft-226-rightaleft-400-rightbleft-440-rightcleft-040-right-the-tich-khoi-chop-s-abc-la-2.html/feed 0 Đề: Trong không gian với hệ tọa độ Oxyz, cho hai đường thẳng \({d_1}:\frac{{x – 1}}{3} = \frac{{y + 2}}{{ – 1}} = \frac{{z + 1}}{2}\) và \({d_2}:\left\{ {\begin{array}{*{20}{c}}{\begin{array}{*{20}{c}}{x =  – 3 + 3t}\\{y = 5 – t}\end{array}}\\{z = 2t}\end{array}} \right.\). Mặt phẳng tọa độ Oxz cắt các đường thẳng \({d_1},{d_2}\) lần lượt tại các điểm A, B. Diện tích tam giác OAB là: https://booktoan.com/de-trong-khong-gian-voi-he-toa-do-oxyz-cho-hai-duong-thang-d_1fracx-13-fracy-2-1-fracz-12-va-d_2left-beginarray20cbeginarray-2.html https://booktoan.com/de-trong-khong-gian-voi-he-toa-do-oxyz-cho-hai-duong-thang-d_1fracx-13-fracy-2-1-fracz-12-va-d_2left-beginarray20cbeginarray-2.html#respond Sun, 26 May 2019 10:55:22 +0000 https://booktoan.com/de-trong-khong-gian-voi-he-toa-do-oxyz-cho-hai-duong-thang-d_1fracx-13-fracy-2-1-fracz-12-va-d_2left-beginarray20cbeginarray-2.html https://booktoan.com/de-trong-khong-gian-voi-he-toa-do-oxyz-cho-hai-duong-thang-d_1fracx-13-fracy-2-1-fracz-12-va-d_2left-beginarray20cbeginarray-2.html/feed 0 Đề: Trong không gian với hệ tọa độ Oxyz, cho hai đường thẳng \({d_1}:\frac{{x – 1}}{3} = \frac{{y + 2}}{{ – 1}} = \frac{{z + 1}}{2}\) và \({d_2}:\left\{ {\begin{array}{*{20}{c}}{\begin{array}{*{20}{c}}{x =  – 3 + 3t}\\{y = 5 – t}\end{array}}\\{z = 2t}\end{array}} \right.\). Mặt phẳng tọa độ Oxz cắt các đường thẳng \({d_1},{d_2}\) lần lượt tại các điểm A, B. Diện tích tam giác OAB là: https://booktoan.com/de-trong-khong-gian-voi-he-toa-do-oxyz-cho-hai-duong-thang-d_1fracx-13-fracy-2-1-fracz-12-va-d_2left-beginarray20cbeginarray.html https://booktoan.com/de-trong-khong-gian-voi-he-toa-do-oxyz-cho-hai-duong-thang-d_1fracx-13-fracy-2-1-fracz-12-va-d_2left-beginarray20cbeginarray.html#respond Sun, 26 May 2019 10:54:50 +0000 https://booktoan.com/de-trong-khong-gian-voi-he-toa-do-oxyz-cho-hai-duong-thang-d_1fracx-13-fracy-2-1-fracz-12-va-d_2left-beginarray20cbeginarray.html https://booktoan.com/de-trong-khong-gian-voi-he-toa-do-oxyz-cho-hai-duong-thang-d_1fracx-13-fracy-2-1-fracz-12-va-d_2left-beginarray20cbeginarray.html/feed 0 Đề: Trong không gian hệ tọa độ Oxyz, cho hình chóp S.ABC có \(S\left( {2;2;6} \right),A\left( {4;0;0} \right),B\left( {4;4;0} \right),C\left( {0;4;0} \right)\). Thể tích khối chóp S.ABC là: https://booktoan.com/de-trong-khong-gian-he-toa-do-oxyz-cho-hinh-chop-s-abc-co-sleft-226-rightaleft-400-rightbleft-440-rightcleft-040-right-the-tich-khoi-chop-s-abc-la.html https://booktoan.com/de-trong-khong-gian-he-toa-do-oxyz-cho-hinh-chop-s-abc-co-sleft-226-rightaleft-400-rightbleft-440-rightcleft-040-right-the-tich-khoi-chop-s-abc-la.html#respond Sun, 26 May 2019 10:54:50 +0000 https://booktoan.com/de-trong-khong-gian-he-toa-do-oxyz-cho-hinh-chop-s-abc-co-sleft-226-rightaleft-400-rightbleft-440-rightcleft-040-right-the-tich-khoi-chop-s-abc-la.html https://booktoan.com/de-trong-khong-gian-he-toa-do-oxyz-cho-hinh-chop-s-abc-co-sleft-226-rightaleft-400-rightbleft-440-rightcleft-040-right-the-tich-khoi-chop-s-abc-la.html/feed 0