If p > 0, the parabola opens to the right and if p < 0 the parabola opens to the left. The equations we have just established are known as the standard equations of a parabola. A standard equation always implies the vertex is at the origin and the focus is on one of the axes.
Euphorbias are on all the toxic plant lists and everyone is familiar with the hazards of Poinsettias.here is some discussion of severe toxic principles of Tylecodons I did not understand as these are in no way related to Euphorbias or in the Euphorbia family. Though the article is fairly long, it is filled with very few facts and is primarily anecdotal.
General poisoning notes: English ivy (Hedera helix) is an indoor and outdoor ornamental vine. This plant contains saponins, which have caused poisoning in cattle, dogs, sheep, and humans. Two chemicals in the sap can also cause severe contact dermatitis in sensitive humans.he sap contained in the leaves and stems of English ivy can cause dermatitis and irritation in sensitive humans. The dermatitis usually occurs after pruning the plant (Massmanian et al. 1988). The leaves and fruit contain saponins that hydrolyze into toxic hederin compounds.