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A
B
C
D
E
F
In the same amount of time, which waveforms fit in the most complete waves?
Look again at the same six waveforms A to F. Each is shown over the same time. Which two waveforms have the highest frequency? You need both letters.
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√ Symbols
$x$
a⁄b
xⁿ
xₙ
√
( )
×
÷
±
≈
π
θ
→
°
＋ More symbols (IGCSE / A-Level — all subjects)
Calculus
ⁿ√
∫
∮
dy/dx
d/dx
∂
∑
∏
lim
∞
f′
∇
∝
Functions
sin
cos
tan
sec
cosec
cot
sin⁻¹
ln
log
logₐ
eˣ
|x|
Greek
α
β
γ
δ
ε
η
λ
μ
ν
ρ
σ
τ
φ
χ
ψ
ω
Δ
Σ
Π
Ω
Φ
Λ
Θ
Relations & logic
≠
≡
<
>
≤
≥
≪
≫
≅
∼
∴
∵
⇒
⇔
Sets & numbers
∈
∉
⊂
⊆
∪
∩
∅
∀
∃
ℝ
ℤ
ℕ
ℚ
ℂ
Vectors, matrices & stats
a⃗
â
𝐚
AB⃗
·
ⁿCᵣ
matrix
x̄
x̂
σ²
n!
Physics
×10ⁿ
Ω
μ
λ
ω
ρ
Δ
∝
≈
°C
Chemistry
₂
₃
₄
₅
₆
⁺
⁻
²⁺
²⁻
→
⇌
⟶
Δ
δ⁺
δ⁻
•
⦵
(s)
(l)
(g)
(aq)
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