#Can anyone answer that alevel question??

10 messages · Page 1 of 1 (latest)

spring jasper
modern oxideBOT
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jagged kite
# spring jasper

(a).
Note that x√(x) = x^(3/2).
(b).
Express the equation of the tangent line in slope-intercept form. Then you'll be able to find the point at which it touches the curve, and continue from there.

spring jasper
jagged kite
# spring jasper should i do x^3/2 +k=3x+5/3

First of all, the equation of the line isn't y = 3x + 5/3.
Second, it's better to work out the point at which the derivative of the function is the same as the slope of the line.

spring jasper
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oh my bad y=3x+5/2

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so 3/2x^1/2=3?

spring jasper
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should k =17/3