Topic explanation

Standard explanation

y=arctan x means tan y=x with real x and y in (-pi/2,pi/2).

Key points

• arctan definition and graph
• rule
• worked example
• arctan definition and graph: y=arctan x means tan y=x with real x and y in (-pi/2,pi/2).
• CONCEPT AND RULE: y=arctan x means tan y=x with real x and y in (-pi/2,pi/2).
• METHOD: For arctan definition and graph, identify the given information and required result. Select the matc
• y=arctan x means tan y=x with real x and y in (-pi/2,pi/2).
• Worked pattern: arctan(1)=pi/4.

Labelled diagram