- Messages
- 382
- Reaction score
- 315
- Points
- 73
http://papers.xtremepapers.com/CIE/...S Level/Mathematics (9709)/9709_w10_qp_33.pdf
qn 9(ii), I've shown my attempt working below. Could someone please tell me where I've gone wrong? I'll be grateful..
dA/dt = k√(2A - 5)
dt/dA = 1 / k√(2A - 5)
k dt = 1/(√2A-5) dA
kt + c = √(2A-5) / (1/2)
kt + c = 2√(2A-5)
t = 0, A = 7
c = 2√9
c = 6
qn 9(ii), I've shown my attempt working below. Could someone please tell me where I've gone wrong? I'll be grateful..
dA/dt = k√(2A - 5)
dt/dA = 1 / k√(2A - 5)
k dt = 1/(√2A-5) dA
kt + c = √(2A-5) / (1/2)
kt + c = 2√(2A-5)
t = 0, A = 7
c = 2√9
c = 6