Két Quà Phân Tích : 5x2-10xy+5y2-20z 2 Thành - Gauthmath

Có thể bạn quan tâm

Math Resources/Math/

Question

SHOW LESS58

Answer: u1=1.5u_{1}=1.5 and d=2.5d=2.5.

Sure! Let's solve the problem step by step.

u1+u6−u4=5u_{1}+u_{6}-u_{4}=5 u1+u1+5d−(u1+3d)=5u_{1}+u_{1}+5d-(u_{1}+3d)=5 u1+5d−u1−3d=5u_{1}+5d-u_{1}-3d=5 2d=52d=5 d=2.5d=2.5

u1+u7=18u_{1}+u_{7}=18 u1+u1+6d=18u_{1}+u_{1}+6d=18 2u1+6d=182u_{1}+6d=18 2u1+15=182u_{1}+15=18 u1=1.5u_{1}=1.5

Click to rate:5.0(748 votes)Search questionBy textBy image/screenshotDrop your file here orClick Hereto upload