Subject: Mathematics
Book: Maths Mastery
For y=A sin(Bx–C)+D or y=A cos(Bx–C)+D:
• Amplitude = |A|, the peak displacement.
• Period = 2π/B for sine/cosine (π/B for tangent).
• Phase Shift = C/B, horizontally shifting the graph.
• Vertical Shift = D, moving it up or down.
Example: y=3 sin(2x–π)+1 has amplitude 3, period π, phase shift π/2, vertical shift 1. Understanding these parameters is pivotal in wave analysis (light, sound, tides), engineering vibrations, or cyclical data modeling. Mastery brings clarity to transformations and deeper intuition for describing recurring phenomena mathematically.
The simple interest on Rs. 4000 at 5% per annum for 2 years is:
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