HexMathv1.0.4

Photo math solver: scan a problem, get every step

This photo math solver solves a math problem from a picture, step by step. Point the camera at one problem, or choose a photo from your gallery. HexMath works through numbered steps to a boxed final answer, and you can ask a follow-up question about any step you want explained.

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What this page covers

  • Printed problems from worksheets, textbooks and screens.
  • Algebra, geometry, trigonometry, calculus, statistics and linear algebra problems.
  • Several problems in one photo, solved as a list.
  • Not covered here: problems with key parts cut off, blurred or hidden by glare. To enter a problem by typing, use the equation solver.

How to enter the problem

  • Scan it. Fit the one problem in the frame.
  • Choose a photo. Several problems in one photo are solved as a list.
  • Or type it or paste it.
  • Then tap Solve.

Worked examples

Example 1: Scanned from a worksheet: solve 3(x - 4) = 2x + 5.

Problem

Scanned from a worksheet: solve 3(x−4)=2x+5\displaystyle 3(x - 4) = 2x + 5.

Answer

Verified

The answer is

x=17x = 17

Explanation

  1. Expand the bracket
    3(x−4)=3x−123(x - 4) = 3x - 12, so the equation is 3x−12=2x+53x - 12 = 2x + 5.
  2. Collect the x terms
    Subtract 2x2x from both sides
    x−12=5x - 12 = 5
  3. Isolate x
    Add 1212 to both sides
    x=17x = 17
  4. Check by substitution
    Left side 3(17−4)=393(17 - 4) = 39, right side 2⋅17+5=392 \cdot 17 + 5 = 39. Both sides match.

Example 2: Photographed from a textbook: find the derivative of x² sin x.

Problem

Photographed from a textbook: find the derivative of x2sin⁡x\displaystyle x^2 \sin x.

Answer

Verified

The answer is

2xsin⁡x+x2cos⁡x2x \sin x + x^2 \cos x

Explanation

  1. Spot a product
    The function is u⋅vu \cdot v with u=x2u = x^2 and v=sin⁡xv = \sin x, so use the product rule (uv)′=u′v+uv′(uv)' = u'v + uv'.
  2. Differentiate each factor
    u′=2xu' = 2x and v′=cos⁡xv' = \cos x.
  3. Combine
    (x2sin⁡x)′=2xsin⁡x+x2cos⁡x(x^2 \sin x)' = 2x \sin x + x^2 \cos x

Example 3: Scanned from homework: add 3/4 + 5/6.

Problem

Scanned from homework: add 34+56\displaystyle \frac{3}{4} + \frac{5}{6}.

Answer

Verified

The answer is

1912=1712\frac{19}{12} = 1\frac{7}{12}

Explanation

  1. Find a common denominator
    The least common multiple of 44 and 66 is 1212.
  2. Rewrite both fractions
    34=912\frac{3}{4} = \frac{9}{12} and 56=1012\frac{5}{6} = \frac{10}{12}.
  3. Add the numerators
    912+1012=1912=1712\frac{9}{12} + \frac{10}{12} = \frac{19}{12} = 1\frac{7}{12}

Common mistakes

  • Fitting two problems in one scan frame. Crop to one problem, or choose a photo to have several solved as a list.
  • Shadows, glare or a tilted page. Retake the photo flat and well lit.
  • Cutting off part of the problem, such as an exponent or the last term.
  • Copying the final answer without the working. Most homework asks for the steps, so read them.

Checks, assumptions and limits

  • Check the problem at the top of the solution against your page before reading the steps. If a number or sign is wrong, retake the photo or type the problem.
  • Check the answer by substitution where you can. In the first worked example, both sides equal 39 when x is 17.
  • HexMath can make mistakes. Double check important steps.

Frequently asked questions

Yes. Choose a photo that holds several problems and they are solved as a list. For the clearest result, scan one problem at a time.

One problem in the frame, the page flat, even light without glare, and every exponent and fraction fully visible.

Yes, with a free account: 3 math questions a day, unlimited with Pro.

Yes. HexMath is on the App Store and Google Play with the same solver and camera scan.

Related tasks

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