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" find, in terms of a and k, the gradient of the graph y = a - k/x at the point where it crosses x axis."
ok i worked out dy/dx = k/x^2 and x = k/a when y = o.
now what do i do. =(
thx for help in advance
ok i worked out dy/dx = k/x^2 and x = k/a when y = o.
now what do i do. =(
thx for help in advance