摘要: In this paper, it is shown that: if λ1,…,λ8 are nonzero real numbers, not all of the same sign, such that λ1/λ2 is irrational, then for any real numberηandε>0 the inequality |λ1x12+λ2x22+λ3x34+…+λ8x84+η|<ε has infinitely many solutions in positive integers x1,…,x8.
                                                        
                              
                             
                            
                            																								
								
																中图分类号: 
																 
								
								
																                            
                            
                                
                                    
                                
                                
                                    
                                        															龚克, 李伟平.. 一个混合幕为2和4的丢番图不等式[J]. 数学季刊, 2008, 23(1): 1-7.	
																																									     												                                                                                                        	                                                                                                                      GONG Ke, LI Wei-ping. One Additive Diophantine Inequality with Mixed Powers 2 and 4[J]. Chinese Quarterly Journal of Mathematics, 2008, 23(1): 1-7.