Card 1 of 31
Write \fsecx\fsec x\fsecx as a reciprocal.
A
The function \fcos−1x\fcos^{-1}x\fcos−1x is decreasing and has range 0\fleqy\fleq\fpi0\fleq y\fleq\fpi0\fleqy\fleq\fpi.
B
\fsecx=\ffrac1\fcosx\fsec x=\ffrac{1}{\fcos x}\fsecx=\ffrac1\fcosx
C
x=n\fpix=n\fpix=n\fpi, where n\fin\fmathbbZn\fin\fmathbb Zn\fin\fmathbbZ.
D
\fsecx\fleq−1\fsec x\fleq-1\fsecx\fleq−1 or \fsecx\fgeq1\fsec x\fgeq1\fsecx\fgeq1.
Card 1 of 31
1.5.9 Graphs of reciprocal and inverse functions (A-level only) Flashcards
31 flashcards on OCR A Level Maths 1.5.9 Graphs of reciprocal and inverse functions (A-level only): the key formulae, methods and definitions you need to recall for Paper 1, Paper 2 and Paper 3.