Exponential And Logarithmic Functions - Sharp EL-531LH Mastering Instructions

33
Mastering the Calculator using the Sharp EL-531LH
θ
–1
To find the value of , you need to use the cos key. The calculator keystrokes are:
Note: You must first get the value of the division by using brackets.
Your display should read 60°. If it does not, check that you are in degree mode.

12. Exponential and logarithmic functions

There are two log keys on your calculator, with their associated exponential keys. The latter
are accessed by first using the yellow 2ndF key:
The 'log' key uses base 10 and the 'ln' key uses base e (natural logarithm).
Example 1
a
Solve equation 2 = 20
Taking logs of both sides;