17da6581c9facfe.png18、用后退欧拉法计算下列初值问题，取步长h=0.5，则得到近似值y4为（ ）。 A: 0.880 773 B: 0.937 500 C: 0.984 615 D: 0.733 082
17da6581c9facfe.png18、用后退欧拉法计算下列初值问题，取步长h=0.5，则得到近似值y4为（ ）。 A: 0.880 773 B: 0.937 500 C: 0.984 615 D: 0.733 082
17d61d865a13147.png18、用后退欧拉法计算下列初值问题，取步长h=0.5，则得到近似值y4为（ ）。 A: 0.733 082 B: 0.937 500 C: 0.984 615 D: 0.880 773
17d61d865a13147.png18、用后退欧拉法计算下列初值问题，取步长h=0.5，则得到近似值y4为（ ）。 A: 0.733 082 B: 0.937 500 C: 0.984 615 D: 0.880 773
The employees of a company were surveyed on questions regarding their educational background (college degree or no college degree) and marital status (single or married). Of the 600 employees, 400 had college degrees, 100 were single, and 60 were single college graduates. The probability that an employee of the company is single or has a college degree is ________. A: 0.10 B: 0.25 C: 0.567 D: 0.733
The employees of a company were surveyed on questions regarding their educational background (college degree or no college degree) and marital status (single or married). Of the 600 employees, 400 had college degrees, 100 were single, and 60 were single college graduates. The probability that an employee of the company is single or has a college degree is ________. A: 0.10 B: 0.25 C: 0.567 D: 0.733
The employees of a company were surveyed on questions regarding their educational background (college degree or no college degree) and marital status (single or married). Of the 600 employees, 400 had college degrees, 100 were single, and 60 were single college graduates. The probability that an employee of the company is single or has a college degree is ________. A: 0.1 B: 0.25 C: 0.667 D: 0.733
The employees of a company were surveyed on questions regarding their educational background (college degree or no college degree) and marital status (single or married). Of the 600 employees, 400 had college degrees, 100 were single, and 60 were single college graduates. The probability that an employee of the company is single or has a college degree is ________. A: 0.1 B: 0.25 C: 0.667 D: 0.733
某同学在《测量Planck常数》实验中测得一组数据，请用最小二乘法帮他计算出此次实验中测定普朗克常数h和光电管的逸出功W。 波长（nm） 365 405 436 546 577 频率（×1014Hz） 8.219 7.407 6.881 5.495 5.199 截至电压（V） 1.875 1.584 1.297 0.733 0.627
某同学在《测量Planck常数》实验中测得一组数据，请用最小二乘法帮他计算出此次实验中测定普朗克常数h和光电管的逸出功W。 波长（nm） 365 405 436 546 577 频率（×1014Hz） 8.219 7.407 6.881 5.495 5.199 截至电压（V） 1.875 1.584 1.297 0.733 0.627
晚上人眼瞳孔的直径可达5.00 mm，迎面驶来汽车的两前灯之间的距离，为1.20 m。若车灯灯光的波长为550 nm，当人恰能分辨两灯时，车与人的距离是（ ） A: 0.733 km B: 7.33 km C: 0.894 km D: 8.94 km
晚上人眼瞳孔的直径可达5.00 mm，迎面驶来汽车的两前灯之间的距离，为1.20 m。若车灯灯光的波长为550 nm，当人恰能分辨两灯时，车与人的距离是（ ） A: 0.733 km B: 7.33 km C: 0.894 km D: 8.94 km
晚上人眼瞳孔的直径可达5.00 mm，迎面驶来汽车的两前灯之间的距离，为1.20 m。若车灯灯光的波长为550 nm，当人恰能分辨两灯时，车与人的距离是（ ） A: 0.733 km B: 7.33 km C: 0.894 km D: 8.94 km
晚上人眼瞳孔的直径可达5.00 mm，迎面驶来汽车的两前灯之间的距离，为1.20 m。若车灯灯光的波长为550 nm，当人恰能分辨两灯时，车与人的距离是（ ） A: 0.733 km B: 7.33 km C: 0.894 km D: 8.94 km