Trong không gian với hệ tọa độ Oxyz, cho hai đường thẳng:
d1:{2xy+3z5=0x+2yz=0;d2{2x2y3z17=02xy2z3=0 và điểm A(3;2;5).
a) Tìm tọa độ điểm A đối xứng với A qua d1.
b) Lập phương trình mặt phẳng đi qua d1 và song song với d2.
c) Tính khoảng cách giữa hai đường thẳng d1,d2.
Cần giải chi tiết.
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