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P.T.F.E

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the tangent of y=log10x at the point of intersection witht the x aixs
 

lyounamu

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the tangent of y=log10x at the point of intersection witht the x aixs
intersects x-axis when y = 0

so it intersects it at (1,0)

y = lnx/ln10
dy/dx = 1/xln10

when x = 1, dy/dx = 1/ln10

rest should be easy
 

Drongoski

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intersects x-axis when y = 0

so it intersects it at (1,0)

y = lnx/ln10
dy/dx = 1/xln10

when x = 1, dy/dx = 1/ln10

rest should be easy

lyounamu

An-nyeong-ha-se-yo
welcome back !
 
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P.T.F.E

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intersects x-axis when y = 0

so it intersects it at (1,0)

y = lnx/ln10
dy/dx = 1/xln10

when x = 1, dy/dx = 1/ln10

rest should be easy

yer thats what i have it was the In10 in the tanget that was confused me because it didnt seem to fit in par b. thanks anyway.
 

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