Finding the gradient of a curve at a point?

Question

Find the gradient of the curve y=(e^-3x)/(x^3+4) when x=0.23

Answer 1

To find gradient of curve we must fallow these 2 steps 

[1]    Find the general gradient of the curve using dy/dx

[2]    Substitute the x coordinate value of the given point
        into the expression found for dy/dx

 

Hence gradient of the curve at given point is -0.379981