Method linspace

__test__/theorem.js:1325–1329

(start, end, n)

  	return array.reduce((a, b) => a.concat(b), []);
  }
  linspace(start, end, n) {
  	const diff = end - start;
  	const step = diff / n;
  	return this.arange(start, end, step);
  }
  arange(start, end, step, offset) {
  	const len = (Math.abs(end - start) + ((offset || 0) * 2)) / (step || 1) + 1;
  	const direction = start < end ? 1 : -1;