## Find Maximum dot product of two arrays with insertion of 0’s

Remember Me? Thread: how to do two vectors to computes their dot product. Hello thereI have to make a program with two vectorsask the user for the number of terms it would like to use and find the dot product.

**HTET solved question find an angle between vectors**

Last edited by royaro; at PM. The first thing you want is for the user to tell the program how many elements of the vectors there will be. So you need to tell the code that this number will be stored somewhere. We'll call this number n. You will also need to allocate space for the vectors themselves- let's use arrays. Thank you but its not working, it doenst let me write nubmers for the second vector that way. Okay, that's an improvement on what you had.

Good work. Firstly, the define n[] seems to be meaningless.

Aib trentino-alto adige. attività 20030613, il servizio bibliotecarioI would remove it. Secondly, it is no use defining a[] and b[] to be arrays with n elements without knowing before what n is. That's why I picked a high number liketo allocate enough space for any sensible number of vector elements. Thirdly, to get the vectors read in, you will need to read in each element separately.

What you want is something like this: Code:. Similar Threads Will my memory leak? Replies: 10 Last Post:PM. How Can I draw What I want? By CChakra in forum Game Programming. Replies: 22 Last Post:AM.

Webgl waterMultiplying arrays dot vectors By Matter in forum C Programming. Replies: 3 Last Post:PM. Dot Product Replies: 5 Last Post:AM. All times are GMT The time now is PM. All rights reserved.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I am trying to find the inner product of 2 vectors iteratively, but I seem to be receiving only zero. Thanks for any help. When 1 is imputed as a parameter, and I specify r and c as 1 and 2, and r2 and c2 as 1 and 2, I should be receiving 5.

The first rule in debugging programs like this is to print key data. Here, the most key data item is probably the value of n. So, you can help yourself by writing:. Using bash so I don't have to keep on typing numbers when the program prompts meyou can get sample output such as:.

Echoing inputs and intermediate results is an elementary but powerful technique for debugging programs. How large are A and B? Then you calculate the dot product of the first n elements. This doesn't seem to make sense. Learn more. C program that finds the product of two vectors incorrectly outputs zero.

Ask Question. Asked 7 years ago. Active 7 years ago.

Female villain name generatorViewed 6k times. Where is B initialized? Active Oldest Votes. Jonathan Leffler Jonathan Leffler k gold badges silver badges bronze badges. You have a bug where you put values into A instead of B. See if these are the correct values. Print nr and c to check they are correct. Check your program. I suggest that you write a simpler test case for inner. Sign up or log in Sign up using Google.The dot or scalar product of vectors and can be written as:.

Cardiak drum kit redditVectors A and B are given by and. Find the dot product of the two vectors. The length of a vector is:. Vector A is given by.

Find A. Determine the angle between and. If two vectors are orthogonal then:. Determine if the following vectors are orthogonal :. It is a mathematical fact that fifty percent of all doctors graduate in the bottom half of their class. Welcome to MathPortal. I designed this web site and wrote all the lessons, formulas and calculators.

If you want to contact me, probably have some question write me using the contact form or email me on mathhelp mathportal. Math Calculators, Lessons and Formulas It is time to solve your math problem. The dot product also called the inner product or scalar product of two vectors is defined as:. Simplifying Adding and Subtracting Multiplying and Dividing. Arithmetic Polar representation.

Simplifying Multiplying and Dividing Adding and Subtracting. Introduction Exponential Equations Logarithmic Functions. Arithmetic Progressions Geometric Progressions. Integration Formulas Exercises. Substitution Integration by Parts Integrals with Trig. Functions Trigonometric Substitutions.

Area Volume Arc Length. Analytic geometry.They can be multiplied using the " Dot Product " also see Cross Product.

So we multiply the length of a times the length of bthen multiply by the cosine of the angle between a and b.

Also note that we used minus 6 for a x it is heading in the negative x-direction. OK, to multiply two vectors it makes sense to multiply their lengths together but only when they point in the same direction. But what is a? It is the magnitude, or length, of the vector a.

We can use Pythagoras :.

## How to calculate dot product of two vectors in Python?

I tried a calculation like that once, but worked all in angles and distances The method above is much easier. The Dot Product gives a scalar ordinary number answer, and is sometimes called the scalar product. But there is also the Cross Product which gives a vector as an answer, and is sometimes called the vector product. Hide Ads About Ads. Dot Product A vector has magnitude how long it is and direction : Here are two vectors: They can be multiplied using the " Dot Product " also see Cross Product.

Vectors Vector Calculator Algebra Index.In mathematics, the dot product or also known as the scalar product is an algebraic operation that takes two equal-length sequences of numbers and returns a single number. Let us given two vectors A and B, and we have to find the dot product of two vectors. Python provides a very efficient method to calculate the dot product of two vectors. By using numpy. If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.

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### Program for dot product and cross product of two vectors

Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below. Writing code in comment? Please use ide. How to get the magnitude of a vector in NumPy? How to calculate dot product of two vectors in Python? Python Program illustrating.

Calculating dot product using dot. For 2-D arrays it is the matrix product. Note that here I have taken dot b, a. Instead of dot a, b and we are going to. Recommended Posts: Compute the outer product of two given vectors using NumPy in Python How to compute the cross product of two given vectors using NumPy? Calculate inner, outer, and cross products of matrices and vectors using NumPy Compute the inner product of vectors for 1-D arrays using NumPy in Python Compute the inner product of vectors for 1-D arrays using NumPy in Python numpy.

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### C++ Program for dot product and cross product of two vectors

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