David Moyes believes his Manchester United players will bounce back after suffering a 4-1 thrashing at the hands of rivals Manchester City.
United were outplayed by a dominant City side, with Wayne Rooney's late free-kick nothing more than a consolation goal for the Red Devils.
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However, Moyes is confident that his team will recover from the defeat and come back stronger.
"We didn't play well; they were better. They started much stronger and much quicker than us," he told Sky Sports. "But we'll get better -- it's a long season to go. We'll put this behind us and move on.
"I thought Manchester City were very good. We weren't, but City started the game really well. We really could have done with coming in at half-time 1-0, losing the second goal just before half-time changes it a little bit. Nevertheless, they came out strong again in the second half.
"I think they got a grip of the game very early on, and we didn't. We never really got to grips with their midfield players in the early part of the game. Because of that, they started to get domination. We had to be stronger, but we weren't. But great credit to the lads that they kept going, kept working away and got a goal back.
"Whatever manager loses the game, you try and win the next one -- nothing changes."
He added: "If ever there was a group of players I would expect [a reaction from] that is Manchester United players. They react and that is what they will do. Every manager has bad days and bad results. I am no different. I talked with the players the same as I would at any other clubs. They are good pros here and they know when they are bang at it and when they are not."
United were without the injured Robin van Persie, who has a groin problem that Moyes does not believe is serious.
"Obviously you miss Robin van Persie," he said. "He is a huge miss to anyone. I don't think it is going to be long. He just felt something in his groin in training. We didn't want to aggravate it."
Moyes added on Rooney's individual display: "I would say Wayne Rooney's performance today was outstanding. He certainly didn't deserve to be on the losing team, he was first-class."
United have picked up just seven points from their opening five games, having lost to Liverpool as well as City, while they have also drawn against Chelsea.
And Moyes reiterated his belief that United were handed an unfair set of opening matches by the Premier League fixture computer.
Moyes said: "We did say it was a difficult start, didn't we? I said at the time, the way the balls came out of the Premier League bag, I wasn't convinced... and I'm still not."
City manager Manuel Pellegrini hailed his side's performance after they comprehensively saw off their rivals.
"It was a very important result, normally you don't expect to win 4-1 against Manchester United but the most important thing was the way we played -- I am very happy," Pellegrini told the club's official website.
"Normally derbies are more equal but today we had a very good day and that allowed us to have superiority against Manchester United this afternoon. Winning the way we won today will give us a lot of confidence.
"I would be very happy if we win all of the games 4-1 but we must improve every game. Not every game is the same, we are just starting in another way to play and I hope we will improve every day.
"Always winning against Manchester United and the way we won could have an important impact."
City were 4-0 up by the 50th minute but failed to add to their tally as Wayne Rooney struck a consolation goal for United late on.
Pellegrini, though, was not concerned by his side's inability to go on and win the game by a bigger advantage.
"I'm not disappointed," he said. "I think we played a little bit quickly in the second half, I think we tried to play box-to-box which wasn't the way to play in those circumstances. We had so much space and we are always trying to tell players to play independently of the score but I think that would have been useful for us in the last forty minutes.
"We have to play United again in three months but until then, the fans will enjoy that result. For the team, winning the way we did today will give us a lot of confidence."
City captain Vincent Kompany played down the impact of his side's thumping derby victory.
The game rekindled memories of their 6-1 away win over United in their Premier League title-winning campaign two years ago, but Kompany dismissed suggestions they had made a "statement'' in the title race.
"I think you make a statement over the whole season,'' he said. "It's too early to say it's a defining game. When we won 6-1 at Old Trafford I said we needed to stay humble, it's only three points. But it gives us all the confidence and allows fans to celebrate for a couple of days.''
Asked about why his side were so dominant, Kompany told Sky Sports 1: "Maybe the game meant a little bit more to us than to them. We've been looking forward to it, our fans have been speaking about it for a long time and we needed to win. We have a fantastic home record and we know there is no reason we should fear the opposition.''