解析 Method A (By substitution)From (1):...(3)Substitute (3) into (2):Substituteinto (3):Method B (By elmination)To eliminate, say,:Substituteinto (1) or (2),Note: We may check our answer by verifying thatsatisfy both equations (1) and (2). 反馈...
y=3x2-4 (1) y=2x+3 121 0=(3x2-4)-(2x+3)(2)-(1) This equation simpoifes to 0=3x^2-2x-7 which dass not factorise, so we need to use the quadratic formula to find the two possible ualces of x. x=(-b±√(b^2-4ac))/(2a)=\frac(-(-2)±√((22)^2-48*(-7))...
Step by step video & image solution for Solve the equation |x + 2| = |x - 13|. (ii) Hence solve the equation |3^y + 2| = |3^y - 13|, giving your answer correct to 3 significant figures. by Maths experts to help you in doubts & scoring excellent marks in Class 12 exams....
Solve these simultaneous equations by eliminating: 1) 7x - y = 9 , 2x + 3y = 19 2) x - 3y = 0, 3x + y = 30 3) 7x - y = 19, 2x + 3y = 12 How do you solve the simultaneous equations 3x - 4y = 11 and 5x + 6y = 12?
Solve the following simultaneous equations:27x−2+31y+3=85,31x−2+27y+3=89 View Solution Solve the following simultaneous equations:2x+6y=13;3x+4y=12 View Solution Solve the following simultaneous equations : 2x−3y=9,2x+y=13
百度试题 结果1 题目Solve the simultaneous equations x+2y-3z=-16(1)2x-3y+4z=46(2)4x+3y+3z=31(3) 相关知识点: 试题来源: 解析 S=(=)= 91=-8-L 加= LE X LLe X11 L=x0)x()+x(1) =+= Sl-Rstxs:(i)+(n 反馈 收藏
解析 ===x =(+99+51 y =2 51=Z-81 51=2-8(+0人 1a=h=x95 sIx A-=xc L=86+x5 ②∠C=6 =h = 60=1+xs L=hx1+XΩ ⑤ G-s1- hltxp S1= I7 +het qns 88=2+h91+x9 O-xz \textcircledx-6s=h≥1+x + 5-S1=z+h+x ①-②x=z+h+x ①-②=②-1 ...
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Step by step video & image solution for Solve the following simultaneous equations: (27)/(x-2)+(31)/(y+3) = 85, (31)/(x-2)+(27)/(y+3)=89 by Maths experts to help you in doubts & scoring excellent marks in Class 10 exams.Updated on:21/07/2023Class...
Solve the following sets of simultaneous equations: (i) ……【查看更多】 题目列表(包括答案和解析) 以下是用Scilab编写的程序,输出a,b的含义是___. a=input(“please give the first number”) b=input(“please give the second number”) while a<>b if a>...