Teresa_2004
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- Joined
- Oct 27, 2004
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- HSC
- 2004
Can someone please help me with these questions?!
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In the end, was your result +ve or -ve?DAAVE said:3ci:
x^2+h^2 = 16
x^2 = 16-h^2
x = sqrt(16-h^2) [since x is +ve]
3cii:
when h = 1
dh/dt = -.3 (since h is getting smaller)
also:
dx/dh = -1/2 * (16-h^2)^(-1/2) * (-2h)
dx/dt = dh/dt * dx/dh
etc etc... sub in 1 and u get ur answer...