Differential Calculations - Canon F-570SG User Instruction

DIFFERENTIAL CALCULATIONS

Press
To perform a differential calculation, you have to input the expression
in the form of:
• The differential expression must contain the variable x.
• "a" is the differential coefficient.
• "∆x" is the change interval of x (calculation precision).
Example: To determine the derivative at point x = 10, ∆x = 10
the function f(x) = sin(3x + 30).
Operation
! You can leave out the ∆x in the differential expression and the
calculator will automatically substitute a value for ∆x.
! The smaller the entered value ∆x is, the longer the calculation time
will be and the result is more accurate; the bigger the entered
value ∆x is, the shorter the calculation time will be and the result
will be comparatively less accurate.
! Discontinuous points and extreme changes in the value of x can
cause inaccurate results or errors.
! When performing differential calculation with trigonometric
function, select radian (Rad) as the angle unit setting.
! Log b, i~Rand, Rec( and Pol( functions can't join to differential
a
calculation.
! During the busy calculation, the calculator will display the message
[PROCESSING]
to enter COMP mode for differential calculation.
differential expression
Display (Upper)
45
a ∆x
-8 , for
Display (Lower)