In2 has no term about x, it is a constant function, like a straight line parallel to the x axis. According to the query data, In2 = 0.69314718055995, and in2 represents the base-2 logarithm of e (approximately equal to 2.7 18). The natural logarithm is the logarithm with the constant e as the base, and it is denoted as lnn(n >；; 0), which is of great significance in physics, biology and other natural sciences, is generally expressed as lnx, and logx is also commonly used to express natural logarithm in mathematics.