SiLink Math

Prototype build — two real questions (Chain rule, Normal approximation), wired to the real scoring engine.

Practice
Live — real scoring engine
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Chain rule ⏱ 0:00 Tech-active
Differentiate
4 marks
ⓘ Differentiate
Normal approximation ⏱ 0:00 Tech-active
X ~ B(350, 0.35). Find P(X > 140).
6 marks
B1
M1
μ =
M1
σ =
M1
boundary =
M1
z =
A1
P(X>140) =
–marks