viewof x0 = Inputs.range([0,10],{step:.1})
f = x => (x**2+1)/(x**3+1)
fprime = x => ((x**3+1)*2*x-3*x**2*(x**2+1))/(x**3+1)**2
y = x => slope*x + intercept
slope = fprime(x0)
intercept = f(x0)-slope*x0
Purpose-built for displays of data
Observable is your go-to platform for exploring data and creating expressive data visualizations. Use reactive JavaScript notebooks for prototyping and a collaborative canvas for visual data exploration and dashboard creation.
