diff --git a/rpgsaga/saga/src/CalcOfFunc.ts b/rpgsaga/saga/src/CalcOfFunc.ts
index 62e14037..47a911d3 100644
--- a/rpgsaga/saga/src/CalcOfFunc.ts
+++ b/rpgsaga/saga/src/CalcOfFunc.ts
@@ -1,8 +1,8 @@
-export function calculate(x: number) {
+export function calculate(x: number): number {
   return (Math.acos(x) ** 4 + Math.asin(x) ** 2) ** 3;
 }
 
-export function getTaskA(xN: number, xK: number, xD: number) {
+export function getTaskA(xN: number, xK: number, xD: number): number[] {
   const ansverA: number[] = [];
   for (let i = xN; i <= xK; i += xD) {
     ansverA.unshift(calculate(i));
@@ -10,7 +10,7 @@ export function getTaskA(xN: number, xK: number, xD: number) {
   return ansverA;
 }
 
-export function getTaskB(numbersX: number[]) {
+export function getTaskB(numbersX: number[]): number[] {
   const ansverB: number[] = [];
   for (const X of numbersX) {
     ansverB.unshift(calculate(X));