HP 35S Scientific 35s Solving built-inEquation, Keys:, Display:, Description:, 7-6 Solving Equations

	
	
	
￿	
￿	

Stores 291.1 in T; solves for N.

Calculates mass in grams, N ⋅ 28.

Calculates density in grams per liter.

Solving built-in Equation

The built-in equations are: “2*2 lin. solve” (Ax+By=C, Dx+Ey=F) and “3*3 lin. Solve”(Ax+By+Cz=D, Ex+Fy+Gz=H, Ix+Jy+Kz=L). If you select one of them, the , and key will have no effect. Pressing the will request 6 variables (A to F) for the 2*2 case or 12 variables (A to L) for the 3*3 case, and use them to find x, y for a 2*2 linear equation system or x, y and z for a 3*3 linear equation system. The result will be saved in variables x, y, and z. The calculator can detect cases with infinitely many solutions or no solutions.

Example: solve the x,y in simultaneous equations

Keys:	Display:	Description:
	  	Enters equation mode.
	  
Ø	  	Displays the built-in
	  	equation
		Prompts for A.
	value
		Stores 1 in A; prompts for
	value	B.
		Stores 2 in B; prompts for
	value	C.
		Stores 5 in C; prompts for
	value	D.
		Stores 3 in D; prompts for
	value	E.

7-6Solving Equations