HP 33s hp 33s_user's manual_English_E_HDPM20PIE56.pdf - Page 102
Type of Equation, Result for, To evaluate an equation
UPC - 082916001456
View all HP 33s manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 102 highlights
Because many equations have two sides separated by "=", the basic value of an equation is the difference between the values of the two sides. For this calculation, "=" in an equation essentially treated as "ಥ". The value is a measure of how well the equation balances. The HP 33s has two keys for evaluating equations: and X. Their actions differ only in how they evaluate assignment equations: X returns the value of the equation, regardless of the type of equation. returns the value of the equation - unless it's an assignment-type equation. For an assignment equation, returns the value of the right side only, and also "enters" that value into the variable on the left side - it stores the value in the variable. The following table shows the two ways to evaluate equations. Type of Equation Result for Result for X Equality: g(x) = f(x) Example: x2 + y2 = r2 Assignment: y = f(x) Example: A = 0.5 × b x h g(x) - f(x) x2 + y2- r2 f(x) ¼ 0.5 × b × h ¼ y - f(x) A - 0.5 × b × h Expression: f(x) Example: x3 + 1 f(x) x3 + 1 ¼ Also stores the result in the left-hand variable, A for example. To evaluate an equation: 1. Display the desired equation. (See "Displaying and Selecting Equations" above.) 2. Press or X. The equation prompts for a value for each variable needed. (If you've changed the number base, it's automatically changed back to base 10.) 3. For each prompt, enter the desired value: If the displayed value is good, press g. If you want a different value, type the value and press g. (Also see "Responding to Equation Prompts" later in this chapter.) 6-10 Entering and Evaluating Equations